Wildlife of Interior Yukon-Alaska Alpine Tundra

The interior Yukon-Alaska alpine tundra hosts specialized fauna adapted to extreme cold, wind, and short summers. Mammals: Barren-ground caribou (migratory herds), Dall sheep, grizzly bear, wolf (gray and Arctic), wolverine, moose (valleys), Arctic ground squirrel, hoary marmot, collared pika, least chipmunk, snowshoe hare, porcupine, red fox.

Birds: Golden eagle, rough-legged hawk, gyrfalcon, ptarmigan (rock, willow, white-tailed), long-tailed jaeger, snowy owl, American pipit, Lapland longspur, snow bunting, gray-cheeked thrush, Swainson's thrush, northern wheatear, Savannah sparrow, white-crowned sparrow, ruby-crowned kinglet, semipalmated plover. Amphibian: wood frog (freeze-tolerant). This ecosystem's integrity depends on vast, connected wilderness.