Distribution, abundance, and use of arctic fox dens located in coastal
tundra communities of the Yukon-Kuskokwim delta were determined in
studies from 1985 to 1990. Dens were denser and less complex than
those described in studies conducted above the Arctic Circle.
Eighty-three dens of varying complexity were found in the 52-km2 study
area. Nineteen dens were used by arctic foxes for whelping or rearing
pups. Three females relocated litters to multiple dens; a maximum of
four dens were used concurrently by pups from one litter. Although
red foxes were common in the region, their use of dens in the study
area was minimal. Differences in vegetation at den sites and nearby
unoccupied sites were minimal. Furthermore, den sites could not be
distinguished from non-den sites during aerial surveys.
Additional publication details
Den use by arctic foxes (Alopex lagopus) in a subarctic region of western Alaska