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May cache food, including bird eggs, for later use.","animalPhenologyComments":"Activity cycles may peak at midnight or at midnight and noon (Underwood and Mosher 1982).","colonialBreeder":false,"length":91,"width":null,"weight":4000,"animalPhenologies":[],"animalFoodHabits":[{"animalCagFoodHabitsId":102192,"foodHabits":{"id":1,"foodHabitsDescEn":"Carnivore","foodHabitsDescEs":"Carnívoro","foodHabitsDescFr":"Carnivore","displayOrder":1},"adult":true,"immature":true},{"animalCagFoodHabitsId":102193,"foodHabits":{"id":2,"foodHabitsDescEn":"Piscivore","foodHabitsDescEs":"Piscivore","foodHabitsDescFr":"Piscivore","displayOrder":2},"adult":true,"immature":true},{"animalCagFoodHabitsId":102194,"foodHabits":{"id":6,"foodHabitsDescEn":"Frugivore","foodHabitsDescEs":"Frugívoro","foodHabitsDescFr":"Frugivore","displayOrder":6},"adult":true,"immature":true}]},"occurrenceDelineations":[{"eoSpecsDetailId":1257,"locationUseClass":{"id":1,"locationUseClassDescEn":"Not applicable","locationUseClassDescEs":"No se aplica","locationUseClassDescFr":"Sans objet","displayOrder":1},"eoSpecGroupName":null,"subtypes":null,"inferredExtentDistance":5.0,"inferredExtentNotes":"Based on a home range of 18.5 square kilometers.","minimumEoCriteria":"Evidence of historical presence, or current and likely recurring presence, at a given location. Such evidence minimally includes reliable observation and documentation of one or more individuals in appropriate habitat where the species is presumed to be established and breeding.","mappingGuidance":null,"separationBarriers":"None. Arctic foxes are good swimmers and can cross waters more than 2 km wide (see Audet et al. 2002).","separationDistanceUnsuitableHabitatat":5.0,"separationDistanceSuitableHabitatat":30.0,"altSeparationProcedure":"Where an occurrence is at least  twice the size of a minimum A-ranked occurrence,  it may be divided into two or more A-ranked occurrences along divisions that are narrower (or absent) than the separation distances given. The dividing lines should be made as much as possible along lines of limited fox use.","separationJustification":"Separation distance is arbitrary and is not intended to establish occurrences that represent discrete populations. Instead, it attempts to balance the high mobility of these mammals against the need for occurrences of practical size for conservation purposes. Throughout much of the range of the species there may be few distribution gaps as large as the separation distance (see following). <br><br>Summer territories usually average between 4 and 60 square kilometers (reviewed by Audet et al. 2002). However, home ranges are substantially larger in migratory populations, and \"floaters\" may have much larger home ranges than do territorial individuals (Audet et al. 2002). Tagged individuals have moved hundreds of kilometers from their tagging location (Audet et al. 2002).<br><br>Unsuitable habitat includes thick forest and very rugged ridges.","versionDate":"2004-09-28","versionAuthor":"Cannings, S., and G. 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Arctic foxes can limit numbers and distribution of nesting brant (Raveling 1989) and are regarded as an impediment to restoration of Aleutian Canada goose populations (Bailey 1992).","restorationPotential":null,"siteConservationPlansConsidered":null,"managementMethods":"Removal or management of arctic foxes at or near brant colonies may increase nest success and assist re-establishment or expansion of depleted brant colonies; the same undoubtedly is true for seabird colonies (Raveling 1989, Anthony et al. 1991, Bailey 1993, Birkhead and Nettleship 1995). <br><br>Introduced, sterile red foxes have been used to eliminate introduced arctic foxes from some islands (Bailey 1992, 1993).","monitoringMethods":null,"managementProgramContacts":null,"monitoringProgramContacts":null,"managementResearchPrograms":null,"managementResearchNeeds":null,"biologicalResearchNeeds":null,"additionalTopics":null},"occurrenceViabilities":[{"eoRankSpecsDetailId":102487,"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":"2020-05-14T02:17:38.78309Z"}],"references":[{"id":1151804,"citation":"American Society of Mammalogists (ASM). 2025. 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