{"elementGlobalId":1168778,"circumscripConfidence":{"id":1,"circumscripConfidenceDescEn":"1 - Strong","circumscripConfidenceDescEs":"1 - Fuerte","circumscripConfidenceDescFr":"1 – Forte"},"classificationLevel":{"id":7,"classificationLevelNameEn":"Species","classificationLevelNameEs":"Especies","classificationLevelNameFr":"Espèce"},"classificationStatus":{"id":1,"classificationStatusDescEn":"Standard","classificationStatusDescEs":"Estándar","classificationStatusDescFr":"Standard"},"iucn":{"id":11,"iucnDescEn":"Least concern","iucnDescEs":"Menos preocupante","iucnDescFr":"Moins préoccupante","iucnCode":"LC"},"nameCategory":{"id":1,"nameCategoryDescEn":"Vertebrate Animal","nameCategoryDescEs":"Animal vertebrado","nameCategoryDescFr":"Animal vertébré","nameTypeCd":"A","nameTypeDesc":"Zoological"},"rankMethodUsed":{"id":4,"rankMethodUsedDescEn":"Expertise without calculation","rankMethodUsedDescEs":null,"rankMethodUsedDescFr":null,"rankMethodUsedExternalDescEn":"Ranked by inspection","rankMethodUsedExternalDescEs":null,"rankMethodUsedExternalDescFr":null},"formattedScientificName":"<i>Corvus brachyrhynchos</i>","scientificName":"Corvus brachyrhynchos","scientificNameAuthor":"Brehm, 1822","primaryCommonName":"American Crow","relatedItisNames":"<i>Corvus brachyrhynchos</i> Brehm, 1822 (TSN 179731)","uniqueId":"ELEMENT_GLOBAL.2.1168778","elcode":"ABPAV10170","conceptRefFullCitation":"American Ornithological Society (AOS). Chesser, R. T., S. M. Billerman, K. J. Burns, C. Cicero, J. L. Dunn, A. W. Kratter, I. J. Lovette, N. A. Mason, P. C. Rasmussen, J. V. Remsen, Jr., D. F. Stotz, and K. Winker. 2020. Sixty-first Supplement to the American Ornithological Society’s Check-list of North American Birds. The Auk 137(3):1-24.","conceptName":"<i>Corvus brachyrhynchos</i>","taxonomicComments":"Formerly (e.g., AOU 1983, 1998) treated as two species <i>Corvus brachyrhynchos</i> and <i>C. caurinus</i> Baird, 1858 [Northwestern Crow], but merged based on genomic data that indicate a lack of reproductive isolation with extensive introgression and backcrossing (Slager et al. 2020), clinal variation, and a lack of consistent differences in size, ecology, and vocalizations where the two are in contact in southwestern British Columbia and northwestern Washington (Rhoads 1893, Johnston 1961, Slager et al. 2020) (AOS 2020, 2021). Also known as Common Crow.","roundedGRank":"G5","conservationStatusFactorsEditionDate":null,"conservationStatusFactorsEditionAuthors":null,"primaryCommonNameLanguage":"EN","recordType":"SPECIES","elementNationals":[{"elementNationalId":1168832,"classifConfidence":null,"nation":{"id":38,"nameEn":"Canada","nameEs":"Canadá","nameFr":"Canada","isoCode":"CA","region":"Canada"},"roundedNRank":"N5B,N5N","elementSubnationals":[{"elementSubnationalId":274028,"subnation":{"id":65,"nameEn":"Northwest Territories","nameEs":"Territorios del Noroeste","nameFr":"Territoires du Nord-Ouest","subnationCode":"NT","dnationId":38},"roundedSRank":"S4","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S4","speciesSubnational":{"elementSubnationalId":274028,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168836,"subnation":{"id":63,"nameEn":"New Brunswick","nameEs":"New Brunswick","nameFr":"Nouveau-Brunswick","subnationCode":"NB","dnationId":38},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":1168836,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":361347,"subnation":{"id":60,"nameEn":"Alberta","nameEs":"Alberta","nameFr":"Alberta","subnationCode":"AB","dnationId":38},"roundedSRank":"S5B,SUN","dataSensitive":{"id":1,"dataSensitiveDescEn":"Yes","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"Y"},"dataSensitiveCategory":{"id":2,"dataSensitiveCategoryDescEn":"Proprietary Data","dataSensitiveCategoryDescEs":null,"dataSensitiveCategoryDescFr":null,"nsStandardInd":true},"srank":"S5B,SUN","speciesSubnational":{"elementSubnationalId":361347,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":790745,"subnation":{"id":93,"nameEn":"Yukon Territory","nameEs":"Territorio del Yukón","nameFr":"Territoire du Yukon","subnationCode":"YT","dnationId":38},"roundedSRank":"S3B","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S3B","speciesSubnational":{"elementSubnationalId":790745,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168841,"subnation":{"id":69,"nameEn":"Quebec","nameEs":"Quebec","nameFr":"Québec","subnationCode":"QC","dnationId":38},"roundedSRank":"S5B","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B","speciesSubnational":{"elementSubnationalId":1168841,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":369574,"subnation":{"id":61,"nameEn":"British Columbia","nameEs":"Columbia Británica","nameFr":"Colombie-Britannique","subnationCode":"BC","dnationId":38},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":369574,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":362720,"subnation":{"id":67,"nameEn":"Ontario","nameEs":"Ontario","nameFr":"Ontario","subnationCode":"ON","dnationId":38},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":362720,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":399501,"subnation":{"id":62,"nameEn":"Manitoba","nameEs":"Manitoba","nameFr":"Manitoba","subnationCode":"MB","dnationId":38},"roundedSRank":"S5B,S2N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S2S3N","speciesSubnational":{"elementSubnationalId":399501,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168843,"subnation":{"id":91,"nameEn":"Labrador","nameEs":"Labrador","nameFr":"Labrador","subnationCode":"LB","dnationId":38},"roundedSRank":"S3","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S3","speciesSubnational":{"elementSubnationalId":1168843,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168840,"subnation":{"id":68,"nameEn":"Prince Edward Island","nameEs":"Isla del Príncipe Eduardo","nameFr":"Île-du-Prince-Édouard","subnationCode":"PE","dnationId":38},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":1168840,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":333700,"subnation":{"id":227,"nameEn":"Nunavut","nameEs":"Nunavut","nameFr":"Nunavut","subnationCode":"NU","dnationId":38},"roundedSRank":"SUB","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"SUB","speciesSubnational":{"elementSubnationalId":333700,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168844,"subnation":{"id":92,"nameEn":"Island of Newfoundland","nameEs":"Isla de Terranova","nameFr":"Île de Terre­Neuve","subnationCode":"NF","dnationId":38},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":1168844,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":290767,"subnation":{"id":70,"nameEn":"Saskatchewan","nameEs":"Saskatchewan","nameFr":"Saskatchewan","subnationCode":"SK","dnationId":38},"roundedSRank":"S5B,S4N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S4N","speciesSubnational":{"elementSubnationalId":290767,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168838,"subnation":{"id":66,"nameEn":"Nova Scotia","nameEs":"Nueva Escocia","nameFr":"Nouvelle-Écosse","subnationCode":"NS","dnationId":38},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":1168838,"hybrid":false,"exotic":false,"native":true}}],"nrankReviewYear":2023,"nrank":"N5B,N5N","speciesNational":{"elementNationalId":1168832,"exotic":false,"native":true}},{"elementNationalId":1168779,"classifConfidence":null,"nation":{"id":225,"nameEn":"United States","nameEs":"Estados Unidos","nameFr":"États-Unis","isoCode":"US","region":"United States"},"roundedNRank":"N5B,N5N","elementSubnationals":[{"elementSubnationalId":308971,"subnation":{"id":55,"nameEn":"Vermont","nameEs":"Vermont","nameFr":"Vermont","subnationCode":"VT","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":308971,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":369347,"subnation":{"id":28,"nameEn":"Michigan","nameEs":"Michigan","nameFr":"Michigan","subnationCode":"MI","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":369347,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":349861,"subnation":{"id":32,"nameEn":"Mississippi","nameEs":"Mississippi","nameFr":"Mississippi","subnationCode":"MS","dnationId":225},"roundedSRank":"S5B","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B","speciesSubnational":{"elementSubnationalId":349861,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":282116,"subnation":{"id":52,"nameEn":"Utah","nameEs":"Utah","nameFr":"Utah","subnationCode":"UT","dnationId":225},"roundedSRank":"S3B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S3S4B,S5N","speciesSubnational":{"elementSubnationalId":282116,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":311577,"subnation":{"id":21,"nameEn":"Kansas","nameEs":"Kansas","nameFr":"Kansas","subnationCode":"KS","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":311577,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":293319,"subnation":{"id":14,"nameEn":"Georgia","nameEs":"Georgia","nameFr":"Géorgie","subnationCode":"GA","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":293319,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":393716,"subnation":{"id":1,"nameEn":"Alaska","nameEs":"Alaska","nameFr":"Alaska","subnationCode":"AK","dnationId":225},"roundedSRank":"S3","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S3","speciesSubnational":{"elementSubnationalId":393716,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":328705,"subnation":{"id":51,"nameEn":"Texas","nameEs":"Texas","nameFr":"Texas","subnationCode":"TX","dnationId":225},"roundedSRank":"S5B","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B","speciesSubnational":{"elementSubnationalId":328705,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":341318,"subnation":{"id":34,"nameEn":"North Carolina","nameEs":"Carolina del Norte","nameFr":"Caroline du Nord","subnationCode":"NC","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":341318,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":365966,"subnation":{"id":23,"nameEn":"Louisiana","nameEs":"Louisiana","nameFr":"Louisiane","subnationCode":"LA","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":365966,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":400224,"subnation":{"id":53,"nameEn":"Virginia","nameEs":"Virginia","nameFr":"Virginie","subnationCode":"VA","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":400224,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":281693,"subnation":{"id":50,"nameEn":"Tennessee","nameEs":"Tennessee","nameFr":"Tennessee","subnationCode":"TN","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":281693,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":400464,"subnation":{"id":2,"nameEn":"Alabama","nameEs":"Alabama","nameFr":"Alabama","subnationCode":"AL","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":400464,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":304514,"subnation":{"id":35,"nameEn":"North Dakota","nameEs":"Dakota del Norte","nameFr":"Dakota du Nord","subnationCode":"ND","dnationId":225},"roundedSRank":"SNRB,SNRN","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"SNRB,SNRN","speciesSubnational":{"elementSubnationalId":304514,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":327178,"subnation":{"id":37,"nameEn":"New Hampshire","nameEs":"New Hampshire","nameFr":"New Hampshire","subnationCode":"NH","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":327178,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":317546,"subnation":{"id":6,"nameEn":"Arizona","nameEs":"Arizona","nameFr":"Arizona","subnationCode":"AZ","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":317546,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168784,"subnation":{"id":7,"nameEn":"California","nameEs":"California","nameFr":"Californie","subnationCode":"CA","dnationId":225},"roundedSRank":"SNR","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"SNR","speciesSubnational":{"elementSubnationalId":1168784,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":340384,"subnation":{"id":45,"nameEn":"Pennsylvania","nameEs":"Pennsylvania","nameFr":"Pennsylvanie","subnationCode":"PA","dnationId":225},"roundedSRank":"S5B","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B","speciesSubnational":{"elementSubnationalId":340384,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168782,"subnation":{"id":4,"nameEn":"Arkansas","nameEs":"Arkansas","nameFr":"Arkansas","subnationCode":"AR","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":1168782,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168829,"subnation":{"id":59,"nameEn":"Wyoming","nameEs":"Wyoming","nameFr":"Wyoming","subnationCode":"WY","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":1168829,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168792,"subnation":{"id":18,"nameEn":"Idaho","nameEs":"Idaho","nameFr":"Idaho","subnationCode":"ID","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":1168792,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":365962,"subnation":{"id":8,"nameEn":"Colorado","nameEs":"Colorado","nameFr":"Colorado","subnationCode":"CO","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":365962,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":351254,"subnation":{"id":58,"nameEn":"West Virginia","nameEs":"Virginia Occidental","nameFr":"Virginie-Occidentale","subnationCode":"WV","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":351254,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":395961,"subnation":{"id":40,"nameEn":"Nevada","nameEs":"Nevada","nameFr":"Nevada","subnationCode":"NV","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":395961,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":284318,"subnation":{"id":30,"nameEn":"Missouri","nameEs":"Missouri","nameFr":"Missouri","subnationCode":"MO","dnationId":225},"roundedSRank":"SNR","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"SNR","speciesSubnational":{"elementSubnationalId":284318,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":308518,"subnation":{"id":22,"nameEn":"Kentucky","nameEs":"Kentucky","nameFr":"Kentucky","subnationCode":"KY","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":308518,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":383660,"subnation":{"id":29,"nameEn":"Minnesota","nameEs":"Minnesota","nameFr":"Minnesota","subnationCode":"MN","dnationId":225},"roundedSRank":"SNR","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"SNR","speciesSubnational":{"elementSubnationalId":383660,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168791,"subnation":{"id":17,"nameEn":"Iowa","nameEs":"Iowa","nameFr":"Iowa","subnationCode":"IA","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":1168791,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":333759,"subnation":{"id":12,"nameEn":"Florida","nameEs":"Florida","nameFr":"Floride","subnationCode":"FL","dnationId":225},"roundedSRank":"S4","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S4S5","speciesSubnational":{"elementSubnationalId":333759,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168813,"subnation":{"id":41,"nameEn":"New York","nameEs":"Nueva York","nameFr":"New York","subnationCode":"NY","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":1168813,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":362534,"subnation":{"id":26,"nameEn":"Maine","nameEs":"Maine","nameFr":"Maine","subnationCode":"ME","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":362534,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":290724,"subnation":{"id":20,"nameEn":"Indiana","nameEs":"Indiana","nameFr":"Indiana","subnationCode":"IN","dnationId":225},"roundedSRank":"S5B","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B","speciesSubnational":{"elementSubnationalId":290724,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168815,"subnation":{"id":43,"nameEn":"Oklahoma","nameEs":"Oklahoma","nameFr":"Oklahoma","subnationCode":"OK","dnationId":225},"roundedSRank":"SNR","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"SNR","speciesSubnational":{"elementSubnationalId":1168815,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":355959,"subnation":{"id":25,"nameEn":"Maryland","nameEs":"Maryland","nameFr":"Maryland","subnationCode":"MD","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":355959,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":383657,"subnation":{"id":36,"nameEn":"Nebraska","nameEs":"Nebraska","nameFr":"Nebraska","subnationCode":"NE","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":3,"dataSensitiveDescEn":"Conditional","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"C"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":383657,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":298951,"subnation":{"id":56,"nameEn":"Washington","nameEs":"Washington","nameFr":"Washington","subnationCode":"WA","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":298951,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":291481,"subnation":{"id":39,"nameEn":"New Mexico","nameEs":"Nuevo México","nameFr":"Nouveau-Mexique","subnationCode":"NM","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":291481,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168814,"subnation":{"id":42,"nameEn":"Ohio","nameEs":"Ohio","nameFr":"Ohio","subnationCode":"OH","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":1168814,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":334174,"subnation":{"id":48,"nameEn":"South Carolina","nameEs":"Carolina del Sur","nameFr":"Caroline du Sud","subnationCode":"SC","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":334174,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":311580,"subnation":{"id":24,"nameEn":"Massachusetts","nameEs":"Massachusetts","nameFr":"Massachusetts","subnationCode":"MA","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":311580,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168818,"subnation":{"id":47,"nameEn":"Rhode Island","nameEs":"Rhode Island","nameFr":"Rhode Island","subnationCode":"RI","dnationId":225},"roundedSRank":"S5B","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B","speciesSubnational":{"elementSubnationalId":1168818,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":280443,"subnation":{"id":11,"nameEn":"Delaware","nameEs":"Delaware","nameFr":"Delaware","subnationCode":"DE","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":280443,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":349865,"subnation":{"id":38,"nameEn":"New Jersey","nameEs":"Nueva Jersey","nameFr":"New Jersey","subnationCode":"NJ","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":349865,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":308611,"subnation":{"id":88,"nameEn":"Navajo Nation","nameEs":"La Nación Navajo","nameFr":"Nation Navajo","subnationCode":"NN","dnationId":225},"roundedSRank":"S3","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S3","speciesSubnational":{"elementSubnationalId":308611,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":265435,"subnation":{"id":44,"nameEn":"Oregon","nameEs":"Oregón","nameFr":"Oregon","subnationCode":"OR","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":265435,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":409535,"subnation":{"id":19,"nameEn":"Illinois","nameEs":"Illinois","nameFr":"Illinois","subnationCode":"IL","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":409535,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":352639,"subnation":{"id":49,"nameEn":"South Dakota","nameEs":"Dakota del Sur","nameFr":"Dakota du Sud","subnationCode":"SD","dnationId":225},"roundedSRank":"S4B,S4N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S4B,S4N","speciesSubnational":{"elementSubnationalId":352639,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":361046,"subnation":{"id":33,"nameEn":"Montana","nameEs":"Montana","nameFr":"Montana","subnationCode":"MT","dnationId":225},"roundedSRank":"S5B","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B","speciesSubnational":{"elementSubnationalId":361046,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":285722,"subnation":{"id":57,"nameEn":"Wisconsin","nameEs":"Wisconsin","nameFr":"Wisconsin","subnationCode":"WI","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":285722,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1168787,"subnation":{"id":10,"nameEn":"District of Columbia","nameEs":"Distrito de Columbia","nameFr":"District de Columbia","subnationCode":"DC","dnationId":225},"roundedSRank":"S5B,S5N","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5B,S5N","speciesSubnational":{"elementSubnationalId":1168787,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":282357,"subnation":{"id":9,"nameEn":"Connecticut","nameEs":"Connecticut","nameFr":"Connecticut","subnationCode":"CT","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":282357,"hybrid":false,"exotic":false,"native":true}}],"nrankReviewYear":1997,"nrank":"N5B,N5N","speciesNational":{"elementNationalId":1168779,"exotic":false,"native":true}}],"lastModified":"2026-10-03T01:17:45.693179Z","lastPublished":"2026-10-02T21:32:08.892226Z","promotionalDescription":null,"conceptLineageSummary":null,"nsxUrl":"/Taxon/ELEMENT_GLOBAL.2.1168778/Corvus_brachyrhynchos","grankAdjustmentReasons":null,"grankChangeDate":"1996-12-02","grankReviewDate":"2016-04-07","grankReasons":null,"grank":"G5","rankInfo":{"elementGlobalId":1168778,"aooPercentGood":null,"enviromentalSpecificity":null,"intrinsicVulnerability":null,"longTermTrend":null,"numberEos":null,"numberGoodEos":null,"numberProtEos":null,"popSize":null,"rangeExtent":{"id":35,"rangeExtentDescEn":">2,500,000 square km (greater than 1,000,000 square miles)","rangeExtentDescEs":">2.500.000 kilómetros cuadrados (más ","rangeExtentDescFr":">2 500 000 km carrés (plus de 1 000 000 miles carrés)"},"shortTermTrend":null,"threatImpactAssigned":null,"rangeExtentComments":"This species breeds along the Pacific coast from south-coastal and southeastern Alaska (west to Kodiak south through western British Columbia (including Haida Gwaii and Vancouver Island), and from north-central British Columbia, southwestern Northwest Territories, northern Saskatchewan, northern Manitoba, northern Ontario, south-central Quebec, and Newfoundland south to northwestern Baja California (to Ensenada), central Arizona, southern New Mexico, central and southeastern Texas (to Odessa, San Antonio, and north of Corpus Christi), the Gulf coast, and southern Florida (except the Florida Keys). Winters along the Pacific coast from south-coastal and southeastern Alaska (west to Kodiak Island) south through western British Columbia (including Haida Gwaii and Vancouver Island), and from southern Canada (British Columbia east to Newfoundland) south through the breeding range occasionally to the Florida Keys, and casually to southern Arizona. Introduced and established on Bermuda. Casual in southern Nunavut, northwestern Sonora, and western Chihuahua (AOS 2020).","areaOfOccupancy":null,"areaOfOccupancyComments":null,"numberEosComments":null,"popSizeComments":null,"viabilityComments":null,"threatImpactComments":null,"shortTermTrendComments":null,"longTermTrendComments":null,"inventoryNeeds":null,"numberProtEosComments":null,"protectionNeeds":null,"otherConsiderations":null,"intrinsicVulnerabilityComments":null,"enviromentalSpecificityComments":null},"animalCharacteristics":{"elementGlobalId":1168778,"majorHabitat":{"id":3,"majorHabitatDescEn":"Terrestrial","majorHabitatDescEs":"Terrestre","majorHabitatDescFr":"Terrestre"},"nonMigrant":true,"localMigrant":true,"longDistanceMigrant":true,"mobilityMigrationComments":"Breeding populations north of southern Canada move south for winter.<br /><br />In Washington, centers of activity of juvenile American crows were 0.2-22.2 km away from the natal territory during their first 3-12 months (Withey and Marzluff 2005).","foodHabitsComments":"Opportunistic. Eats various small vertebrates, invertebrates, carrion, grain, fruits. Cooperative foraging and food caching reported in Kilham (1989).","animalPhenologyComments":null,"colonialBreeder":false,"length":45,"width":null,"weight":458,"animalPhenologies":[{"animalCagPhenologyId":103880,"animalPhenology":{"id":3,"animalPhenologyDescEn":"Diurnal","animalPhenologyDescEs":"Diurno","animalPhenologyDescFr":"Diurne","displayOrder":3},"adult":true,"immature":true}],"animalFoodHabits":[{"animalCagFoodHabitsId":110303,"foodHabits":{"id":1,"foodHabitsDescEn":"Carnivore","foodHabitsDescEs":"Carnívoro","foodHabitsDescFr":"Carnivore","displayOrder":1},"adult":true,"immature":true},{"animalCagFoodHabitsId":110304,"foodHabits":{"id":3,"foodHabitsDescEn":"Invertivore","foodHabitsDescEs":"Invertívoro","foodHabitsDescFr":"Invertivore","displayOrder":3},"adult":true,"immature":true},{"animalCagFoodHabitsId":110305,"foodHabits":{"id":5,"foodHabitsDescEn":"Granivore","foodHabitsDescEs":"Granívoro","foodHabitsDescFr":"Granivore","displayOrder":5},"adult":true,"immature":true},{"animalCagFoodHabitsId":110306,"foodHabits":{"id":6,"foodHabitsDescEn":"Frugivore","foodHabitsDescEs":"Frugívoro","foodHabitsDescFr":"Frugivore","displayOrder":6},"adult":true,"immature":true}]},"occurrenceDelineations":[{"eoSpecsDetailId":124587,"locationUseClass":{"id":2,"locationUseClassDescEn":"Breeding","locationUseClassDescEs":"En reproducción","locationUseClassDescFr":"Reproduction","displayOrder":2},"eoSpecGroupName":"Passerines","subtypes":"Foraging Area, Nest Site, Nesting Colony","inferredExtentDistance":null,"inferredExtentNotes":null,"minimumEoCriteria":"Evidence of historical breeding, or current and likely recurring breeding, at a given location, minimally a reliable observation of one or more breeding pairs in appropriate habitat. Be cautious about creating EOs for observations that may represent single breeding events outside the normal breeding distribution.","mappingGuidance":"Breeding occurrences include nesting areas as well as foraging areas.<br/><br/>For swallows and other species that have separate nesting and foraging areas, separations are based on nest sites or nesting areas, not to locations of foraging individuals. For example, nesting areas separated by a gap larger than the separation distance are different occurrences, regardless of the foraging locations of individuals from those nesting areas. This separation procedure is appropriate because nesting areas are the critical aspect of swallow breeding occurrences, tend to be relatively stable or at least somewhat predictable in general location, and so are the basis for effective conservation; foraging areas are much more flexible and not necessarily static.","separationBarriers":null,"separationDistanceUnsuitableHabitatat":5.0,"separationDistanceSuitableHabitatat":5.0,"altSeparationProcedure":null,"separationJustification":"Significant dispersal and associated high potential for gene flow among populations of birds separated by tens of kilometers (e.g., Moore and Dolbeer 1989), and increasing evidence that individuals leave their usual home range to engage in extrapair copulations, as well as long foraging excursions of some species, make it difficult to circumscribe occurrences on the basis of meaningful population units without occurrences becoming too large. Hence, a moderate, standardized separation distance has been adopted for songbirds and flycatchers; it should yield occurrences that are not too spatially expansive while also accounting for the likelihood of gene flow among populations within a few kilometers of each other.<br/><br/>Be careful not to separate a population's nesting areas and foraging areas as different occurrences; include them in the same occurrence even if they are more than 5 km apart. Mean foraging radius (from nesting area) of Brown-headed Cowbird females was 4.0 kilometers in California, 1.2 kilometers in Illinois-Missouri (Thompson 1994). Yellow-headed Blackbirds, Brewer's Blackbirds, and probably Red-winged Blackbirds all forage up to 1.6 kilometers away from breeding colony (Willson 1966, Horn 1968). In one study, Brewer's Blackbirds were found as far as 10 kilometers from nesting area (Williams 1952), but this may be unusual.<br/><br/>For swallows and other passerines with similar behavioral ecology, separation distance pertains to nest sites or nesting colonies, not to locations of foraging individuals. For example, nesting areas separated by a gap of more than 5 km are different occurrences, regardless of the foraging locations of individuals from those nesting areas. This separation procedure is appropriate because nesting areas are the critical aspect of swallow breeding occurrences, tend to be relatively stable or at least somewhat predictable in general location, and so are the basis for effective conservation; foraging areas are much more flexible and not necessarily static.<br/><br/>Be cautious about creating EOs for observations that may represent single breeding events outside the normal breeding distribution.<br/><br/>Unsuitable habitat: Habitat not normally used for breeding/feeding by a particular species. For example, unsuitable habitat for grassland and shrubland birds includes forest/woodland, urban/suburban, and aquatic habitats. Most habitats would be suitable for birds with versatile foraging habits (e.g., most corvids).","versionDate":"2004-09-10","versionAuthor":"Hammerson, G.","versionNotes":null,"lastModified":"2025-12-05T22:48:36.225047Z"},{"eoSpecsDetailId":124588,"locationUseClass":{"id":3,"locationUseClassDescEn":"Nonbreeding","locationUseClassDescEs":"No reproducción","locationUseClassDescFr":"Non-reproduction","displayOrder":3},"eoSpecGroupName":"Passerines","subtypes":"Foraging Area, Roost Site","inferredExtentDistance":null,"inferredExtentNotes":null,"minimumEoCriteria":"Any area used traditionally in the nonbreeding season (used for populations that are not resident in a location year-round). Minimally, reliable observations of 10 or more individuals in appropriate habitat for 20 or more days at a time. For G1-G3 species, observations of fewer individuals could constitute an occurrence of conservation value. Sites used during migration should be documented under the 'migratory stopover' location use class.","mappingGuidance":null,"separationBarriers":null,"separationDistanceUnsuitableHabitatat":5.0,"separationDistanceSuitableHabitatat":5.0,"altSeparationProcedure":null,"separationJustification":"Separation distance is necessarily arbitrary but attempts to balance the high mobility of birds with the need for occurrences of reasonable spatial scope. Note that a population's roost sites and foraging areas are parts of the same occurrence, even if they are more than 5 km apart.<br/><br/>For swallows and other species with similar behavioral ecology, the separation distance pertains to communal roost sites rather than to foraging areas; the former tend to be more stable and specific over time than the latter.","versionDate":"2004-09-03","versionAuthor":"Hammerson, G.","versionNotes":null,"lastModified":"2025-12-05T22:48:36.225047Z"},{"eoSpecsDetailId":124589,"locationUseClass":{"id":4,"locationUseClassDescEn":"Migratory stopover","locationUseClassDescEs":"Parada migratoria","locationUseClassDescFr":"Halte migratoire","displayOrder":5},"eoSpecGroupName":"Passerines","subtypes":"Foraging Area, Roost Site","inferredExtentDistance":null,"inferredExtentNotes":null,"minimumEoCriteria":"For most passerines: Evidence of recurring presence of migrating individuals (including historical) and potential recurring presence at a given location; minimally a reliable observation of 25 birds in appropriate habitat.<br/><br/>For swallows: Evidence of recurring presence of migrating flocks (including historical) and potential recurring presence at a given location; minimally a reliable observation of 100 birds in appropriate habitat (e.g., traditional roost sites).<br/><br/>Occurrences should be locations where the species is resident for some time during the appropriate season; it is preferable to have observations documenting presence over at least 7 days annually.<br/><br/>EOs should not be described for species that are nomadic during nonbreeding season: e.g., Lark Bunting.<br/><br/>Be cautious about creating EOs for observations that may represent single events.","mappingGuidance":null,"separationBarriers":null,"separationDistanceUnsuitableHabitatat":5.0,"separationDistanceSuitableHabitatat":5.0,"altSeparationProcedure":null,"separationJustification":"Separation distance somewhat arbitrary but intended to define occurrences of manageable size for conservation purposes. Occurrences defined primarily on the basis of areas supporting concentrations of birds, rather than on the basis of distinct populations.<br/><br/>For swallows and other species with similar behavioral ecology, the separation distance pertains to communal roost sites rather than to foraging areas; the former tend to be more stable and specific over time than the latter.","versionDate":"2004-09-03","versionAuthor":"Hammerson, G., and S. Cannings","versionNotes":null,"lastModified":"2025-12-05T22:48:36.225047Z"},{"eoSpecsDetailId":124586,"locationUseClass":{"id":13,"locationUseClassDescEn":"Nonmigratory","locationUseClassDescEs":"No migratorio","locationUseClassDescFr":"Non migratrice","displayOrder":20},"eoSpecGroupName":"Passerines","subtypes":null,"inferredExtentDistance":null,"inferredExtentNotes":null,"minimumEoCriteria":"Occurrences are based on evidence of historical presence, or current and likely recurring presence, at a particular location. Such evidence minimally includes collection or reliable observation and documentation of one or more individuals in or near appropriate habitat.<br/><br/>These occurrence specifications are used for nonmigratory populations of passerine birds.","mappingGuidance":null,"separationBarriers":"None.","separationDistanceUnsuitableHabitatat":5.0,"separationDistanceSuitableHabitatat":5.0,"altSeparationProcedure":null,"separationJustification":"Significant dispersal and associated high potential for gene flow among populations of birds separated by tens of kilometers (e.g., Moore and Dolbeer 1989), and increasing evidence that individuals leave their usual home range to engage in extrapair copulations, as well as long foraging excursions of some species, make it difficult to circumscribe occurrences on the basis of meaningful population units without occurrences becoming too large. Hence, a moderate, standardized separation distance has been adopted for songbirds and flycatchers; it should yield occurrences that are not too spatially expansive while also accounting for the likelihood of gene flow among populations within a few kilometers of each other.<br/><br/>Be careful not to separate a population's nesting areas and breeding-season foraging areas as different occurrences; include them in the same occurrence even if they are more than 5 km apart. Blue jays have small summer home ranges but fly up to 4 kilometers to harvest mast (Tarvin and Woolfenden 1999). Flocks of pinyon jays range over 21-29 square kilometers (Ligon 1971, Balda and Bateman 1971); nesting and foraging areas may be widely separated. Tricolored blackbirds forage in flocks that range widely to more than 15 kilometers from the nesting colony (Beedy and Hamilton 1999).<br/><br/>Unsuitable habitat: Habitat not normally used for breeding/feeding by a particular species. For example, unsuitable habitat for grassland and shrubland birds includes forest/woodland, urban/suburban, and aquatic habitats. Most habitats would be suitable for birds with versatile foraging habits (e.g., most corvids).","versionDate":"2004-09-10","versionAuthor":"Hammerson, G.","versionNotes":"These specs pertain to nonmigratory species.","lastModified":"2025-12-05T22:48:36.225047Z"}],"plantCharacteristics":null,"elementManagement":{"elementGlobalId":1168778,"eoManagementGroupName":null,"stewardshipOverview":null,"impacts":null,"restorationPotential":null,"siteConservationPlansConsidered":null,"managementMethods":null,"monitoringMethods":null,"managementProgramContacts":null,"monitoringProgramContacts":null,"managementResearchPrograms":null,"managementResearchNeeds":null,"biologicalResearchNeeds":null,"additionalTopics":null},"occurrenceViabilities":[{"eoRankSpecsDetailId":209728,"eoRankSpecsGroupName":null,"locationUseClass":{"id":1,"locationUseClassDescEn":"Not applicable","locationUseClassDescEs":"No se aplica","locationUseClassDescFr":"Sans objet","displayOrder":1},"excellentViability":null,"goodViability":null,"fairViability":null,"poorViability":null,"viabilityJustification":"Use the Generic Guidelines for the Application of Occurrence Ranks (2008).<br>The Key for Ranking Species Occurrences Using the Generic Approach provides a step-wise process for implementing this method.","versionDate":null,"versionAuthor":null,"versionNotes":null,"lastModified":"2020-12-05T04:08:00.038946Z"}],"references":[{"id":1066919,"citation":"American Ornithological Society (AOS). Chesser, R. T., S. M. Billerman, K. J. Burns, C. Cicero, J. L. Dunn, A. W. Kratter, I. J. Lovette, N. A. Mason, P. C. Rasmussen, J. V. Remsen, Jr., D. F. Stotz, and K. Winker. 2020. Sixty-first Supplement to the American Ornithological Society’s Check-list of North American Birds. The Auk 137(3):1-24.","shortCitationAuthor":"AOS","shortCitationYear":2020,"referenceCode":"A20AOS01NAUS","lastModified":"2021-09-04T03:43:09.756632Z"},{"id":1107327,"citation":"American Ornithological Society (AOS). Chesser, R.T., S.M. Billerman, K.J. Burns, C. Cicero, J.L. Dunn, A.W. Kratter, I.J. Lovette, N.A. Mason, P.C Rasmussen, J.V. Remsen, Jr, D.F. Stotz, and K. Winker. 2021. Addendum to the Sixty-first Supplement to the American Ornithological Society’s Check-list of North American Birds. Ornithology 138(1):1.","shortCitationAuthor":"AOS","shortCitationYear":2021,"referenceCode":"A21AOS02NAUS","lastModified":"2021-12-06T18:56:37.192121Z"},{"id":153779,"citation":"American Ornithologists' Union (AOU). 1983. Check-list of North American Birds, 6th edition. Allen Press, Inc., Lawrence, Kansas. 877 pp.","shortCitationAuthor":"American Ornithologists' Union (AOU)","shortCitationYear":1983,"referenceCode":"B83AOU01NAUS","lastModified":"2020-02-25T14:38:12.689104Z"},{"id":134424,"citation":"American Ornithologists' Union (AOU). 1998. Check-list of North American birds. Seventh edition. American Ornithologists' Union, Washington, D.C. [as modified by subsequent supplements and corrections published in <i>The Auk</i>]. Also available online: http://www.aou.org/.","shortCitationAuthor":"American Ornithologists' Union (AOU)","shortCitationYear":1998,"referenceCode":"B98AOU01NAUS","lastModified":"2020-02-25T14:38:12.673494Z"},{"id":125681,"citation":"Bent, A.C. 1946. Life histories of North American jays, crows, and titmice. U.S. Natl. Mus. Bull. 191. Washington, D.C.","shortCitationAuthor":"Bent","shortCitationYear":1946,"referenceCode":"B46BEN01NAUS","lastModified":"2020-02-25T18:15:00.712716Z"},{"id":463505,"citation":"BirdLife International. 2004b. Threatened birds of the world 2004. CD ROM. BirdLife International, Cambridge, UK.","shortCitationAuthor":"BirdLife International","shortCitationYear":2004,"referenceCode":"N04BIR0100LA","lastModified":"2020-02-25T14:38:12.704742Z"},{"id":135805,"citation":"Chamberlain-Auger, J. A., P. J. Auger, and E. G. Strauss. 1990. Breeding biology of American crows. Wilson Bull. 102:615-622.","shortCitationAuthor":"Chamberlain-Auger et al.","shortCitationYear":1990,"referenceCode":"A90CHA03NAUS","lastModified":"2020-12-05T04:08:00.038946Z"},{"id":124148,"citation":"Goodwin, D. 1986. Crows of the world. Second edition. Univ. Washington Press. 300 pp.","shortCitationAuthor":"Goodwin","shortCitationYear":1986,"referenceCode":"B86GOO01NAUS","lastModified":"2020-02-25T18:12:33.819851Z"},{"id":100210,"citation":"Harrison, C. 1978. A Field Guide to the Nests, Eggs and Nestlings of North American Birds. Collins, Cleveland, Ohio.","shortCitationAuthor":"Harrison","shortCitationYear":1978,"referenceCode":"B78HAR01NAUS","lastModified":"2020-02-25T14:38:12.657866Z"},{"id":107035,"citation":"Harrison, H. H. 1979. A field guide to western birds' nests. Houghton Mifflin Company, Boston. 279 pp.","shortCitationAuthor":"Harrison","shortCitationYear":1979,"referenceCode":"B79HAR01NAUS","lastModified":"2020-02-25T18:11:56.303852Z"},{"id":155592,"citation":"Howell, S. N. G., and S. Webb. 1995.  A guide to the birds of Mexico and northern Central America. Oxford University Press, Oxford, UK.","shortCitationAuthor":"Howell and Webb","shortCitationYear":1995,"referenceCode":"B95HOW01NAUS","lastModified":"2020-02-25T14:38:14.376662Z"},{"id":108393,"citation":"Johnston, D. W. 1961. The biosystematics of American crows. Washington. 127 pp.","shortCitationAuthor":"Johnston","shortCitationYear":1961,"referenceCode":"B61JOH01NAUS","lastModified":"2020-02-25T18:15:54.072913Z"},{"id":120016,"citation":"Kilham, L. 1989. The American crow and the common raven. Texas A & M Univ. Press. 272 pp.","shortCitationAuthor":"Kilham","shortCitationYear":1989,"referenceCode":"B89KIL01NAUS","lastModified":"2020-02-25T18:20:48.858797Z"},{"id":158423,"citation":"Parker III, T. A., D. F. Stotz, and J. W. Fitzpatrick. 1996.  Ecological and distributional databases for neotropical birds. The University of Chicago Press, Chicago.","shortCitationAuthor":"Parker et al.","shortCitationYear":1996,"referenceCode":"B96PAR0100LA","lastModified":"2020-02-25T14:38:12.689104Z"},{"id":158712,"citation":"Peterson, R.T. 1980b. A field guide to the birds of eastern and central North America. Houghton Mifflin Company, Boston.","shortCitationAuthor":"Peterson","shortCitationYear":1980,"referenceCode":"B80PET0200LA","lastModified":"2020-02-25T14:38:16.673564Z"},{"id":158713,"citation":"Peterson, R.T. 1990b. A field guide to western birds. Houghton Mifflin Company, Boston.","shortCitationAuthor":"Peterson","shortCitationYear":1990,"referenceCode":"B90PET0100LA","lastModified":"2020-02-25T14:38:16.68918Z"},{"id":158711,"citation":"Poole, A. F. and F. B. Gill. 1992. The birds of North America. The American Ornithologists' Union, Washington, D.C. and The Academy of Natural Sciences, Philadelphia, PA.","shortCitationAuthor":"Poole and Gill","shortCitationYear":1992,"referenceCode":"B92POO0100LA","lastModified":"2020-02-25T14:38:12.673494Z"},{"id":1068548,"citation":"Rhoads, S. N. 1893. Notes on certain Washington and British Columbia birds. The Auk 10:16-24.","shortCitationAuthor":"Rhoads","shortCitationYear":1983,"referenceCode":"A83RHO01NAUS","lastModified":"2020-12-05T04:08:00.038946Z"},{"id":158716,"citation":"Sibley, D. A. 2000a. The Sibley guide to birds. Alfred A. Knopf, New York.","shortCitationAuthor":"Sibley","shortCitationYear":2000,"referenceCode":"B00SIB0100LA","lastModified":"2020-02-25T14:38:14.361032Z"},{"id":1068547,"citation":"Slager, D. L., K. L. Epperly, R. R. Ha, S. Rohwer, C. Van Hemert, and J. Klicka. 2020. Cryptic and extensive hybridization between ancient lineages of American Crows. Molecular Ecology 29:956-969.","shortCitationAuthor":"Slager et al.","shortCitationYear":2020,"referenceCode":"A20SLA01NAUS","lastModified":"2020-12-05T04:08:00.038946Z"},{"id":143910,"citation":"Sullivan, B. D., and J. J. Dinsmore. 1992. Home range and foraging habitat of American crows, CORVUS BRACHYRHYNCHOS, in a waterfowl breeding area in Manitoba. Can. Field-Nat. 106:181-184.","shortCitationAuthor":"Sullivan and Dinsmore","shortCitationYear":1992,"referenceCode":"A92SUL01NAUS","lastModified":"2020-12-05T04:08:00.038946Z"},{"id":148565,"citation":"Terres, J. K. 1980. The Audubon Society encyclopedia of North American birds. Alfred A. Knopf, New York.","shortCitationAuthor":"Terres","shortCitationYear":1980,"referenceCode":"B80TER01NAUS","lastModified":"2020-02-25T14:38:12.657866Z"},{"id":384021,"citation":"Withey, J. C., and J. M. Marsluff. 2005. Dispersal by juvenile American crows (<i>Corvus brachyrhynchos</i>) influences population dynamics across a gradient of urbanization. Auk 122:205-221.","shortCitationAuthor":"Withey and Marzluff","shortCitationYear":2005,"referenceCode":"A05WIT01NAUS","lastModified":"2020-12-05T04:08:00.038946Z"}],"otherCommonNames":[{"id":205459,"name":"Common Crow","language":"EN"},{"id":198418,"name":"Corneille d'Amérique","language":"FR"},{"id":198417,"name":"Cuervo Americano","language":"ES"}],"speciesGlobal":{"elementGlobalId":1168778,"cites":null,"cosewic":null,"fwsRegion":null,"genusSize":{"id":4,"genusSizeDescEn":"Medium to large genus","genusSizeDescEs":"Género de mediano a grande","genusSizeDescFr":"Moyen à grand genre"},"jurisEndem":{"id":5,"jurisEndemDescEn":"occurs (regularly, as a native taxon) in multiple nations","jurisEndemDescEs":"Se encuentra en varias naciones (de manera regular, como un taxón nativo)","jurisEndemDescFr":"Se trouve dans plusieurs nations (de façon régulière, tel un taxon indigène)"},"nomenclaturallyEst":null,"usesa":null,"informalTaxonomy":{"informalTaxonomyId":4,"level1":"Animals","level2":"Vertebrates","level3":"Birds","level":3,"hasChildren":false,"parentId":2,"distributionStatus":"complete","displayOrder":1070},"parentSpecies":null,"infraspecies":false,"kingdom":"Animalia","phylum":"Craniata","taxclass":"Aves","taxorder":"Passeriformes","family":"Corvidae","genus":"Corvus","americanFisheriesStatus":null,"americanFisheriesStatusDate":null,"saraStatus":null,"saraStatusDate":null,"cosewicDate":null,"interpretedCosewic":null,"cosewicComments":null,"usesaDate":null,"interpretedUsesa":null,"usesaComments":null,"completeDistribution":true,"synonyms":[],"infraspeciesList":[],"ebarId":null,"ebarCanadianScope":false,"ebarGlobalScope":false,"ebarKbaGroup":"Birds","caGeneralStatusId":"GS001138"},"speciesCharacteristics":{"elementGlobalId":1168778,"reproductionComments":"Clutch size 3-7 (usually 4-6). Incubation about 18 days, (?) by both sexes. Young tended by both parents, first fly at 4-5 weeks, disperse at various ages after about 2 months postfledging or stay in natal area. One or two broods annually. Auxilaries (typically young) may help dominant pair (parents) breed (Kilham 1989). Some breeding concentrations may reach 0.8 pairs/ha (Auk 109:609-612).","ecologyComments":"In southwestern Manitoba, spring-summer home range averaged 2.6 sq km; foraging flights from nest averaged 382 m, with infrequent flights longer than 700 m (Sullivan and Dinsmore 1992).","habitatComments":"Open forest and woodland used for nesting and roosting, increasing in urban and suburban areas; open and partly open country for foraging, including agricultural lands, urban areas, orchards, and tidal flats; coastal tidelands near coniferous woodland or forest edge in coastal Alaska and Pacific Northwest; restricted mostly to riparian woodland and adjacent areas in arid regions (AOS 2020).","generalDescription":null,"diagnosticCharacteristics":null,"speciesMarineHabitats":[],"speciesTerrestrialHabitats":[{"cagTerrHabId":-116461,"terrestrialHabitat":{"id":4,"terrestrialHabitatDescEn":"Woodland - Hardwood","terrestrialHabitatDescEs":"Lote de madera - Madera dura","terrestrialHabitatDescFr":"Terrain boisé — Feuillu","displayOrder":6}},{"cagTerrHabId":-116462,"terrestrialHabitat":{"id":5,"terrestrialHabitatDescEn":"Woodland - Conifer","terrestrialHabitatDescEs":"Lote de madera - Conífera","terrestrialHabitatDescFr":"Terrain boisé — Résineux","displayOrder":7}},{"cagTerrHabId":-116463,"terrestrialHabitat":{"id":6,"terrestrialHabitatDescEn":"Woodland - Mixed","terrestrialHabitatDescEs":"Lote de madera - Mixto","terrestrialHabitatDescFr":"Terrain boisé — Mixte","displayOrder":8}},{"cagTerrHabId":-116457,"terrestrialHabitat":{"id":8,"terrestrialHabitatDescEn":"Savanna","terrestrialHabitatDescEs":"Sabana","terrestrialHabitatDescFr":"Savane","displayOrder":10}},{"cagTerrHabId":-116458,"terrestrialHabitat":{"id":9,"terrestrialHabitatDescEn":"Grassland/herbaceous","terrestrialHabitatDescEs":"Pastizales/cobertura herbácea","terrestrialHabitatDescFr":"Prairie/couverture herbacée","displayOrder":11}},{"cagTerrHabId":-116459,"terrestrialHabitat":{"id":19,"terrestrialHabitatDescEn":"Cropland/hedgerow","terrestrialHabitatDescEs":"Tierras cultivadas/cerco vivo","terrestrialHabitatDescFr":"Terre cultivée/haie","displayOrder":22}},{"cagTerrHabId":-116460,"terrestrialHabitat":{"id":20,"terrestrialHabitatDescEn":"Suburban/orchard","terrestrialHabitatDescEs":"Suburbano/ huertos","terrestrialHabitatDescFr":"Banlieusard/verger","displayOrder":23}}],"speciesRiverineHabitats":[],"speciesPalustrineHabitats":[{"cagPalusHabId":-104723,"palustrineHabitat":{"id":6,"palustrineHabitatDescEn":"Riparian","palustrineHabitatDescEs":"Ribereño","palustrineHabitatDescFr":"Riverain","displayOrder":6}}],"speciesLacustrineHabitats":[],"speciesSubterraneanHabitats":[],"speciesEstuarineHabitats":[{"cagEstuarineHabId":-101786,"estuarineHabitat":{"id":4,"estuarineHabitatDescEn":"Tidal flat/shore","estuarineHabitatDescEs":"Marea plana/orilla","estuarineHabitatDescFr":"Replat de marée/rivage","displayOrder":4}}]},"primaryReference":{"id":1066919,"citation":"American Ornithological Society (AOS). Chesser, R. T., S. M. Billerman, K. J. Burns, C. Cicero, J. L. Dunn, A. W. Kratter, I. J. Lovette, N. A. Mason, P. C. Rasmussen, J. V. Remsen, Jr., D. F. Stotz, and K. Winker. 2020. Sixty-first Supplement to the American Ornithological Society’s Check-list of North American Birds. The Auk 137(3):1-24.","shortCitationAuthor":"AOS","shortCitationYear":2020,"referenceCode":"A20AOS01NAUS","lastModified":"2021-09-04T03:43:09.756632Z"},"predecessors":[{"predecessorId":109993,"elCode":"ABPAV10010","name":"Corvus brachyrhynchos","formattedName":"<i>Corvus brachyrhynchos</i>","classficationCode":null,"uniqueId":"ELEMENT_GLOBAL.2.104686","lineageDate":null,"nsxUrl":null},{"predecessorId":109994,"elCode":"ABPAV10020","name":"Corvus caurinus","formattedName":"<i>Corvus caurinus</i>","classficationCode":null,"uniqueId":"ELEMENT_GLOBAL.2.104726","lineageDate":null,"nsxUrl":null}],"elementGlobalThreatAssessments":[]}