Big hooves for paddles and hollow hair for bouyancy make caribou good swimmers. That's important, because they have to swim across the Kobuk River twice as year as they migrate north in the spring and then south in the fall (as in this photo).
A single caribou on its fall migration south across Kobuk Valley National Park, but we know that several hundred throusand in the herd are doing the same thing. One caribou with antlers in velvet standing among yellow and red shrubs.
A lucky photographer captured this spruce grouse in its preferred forest habitat. Typically, they are hard to see because of their camouflage. Mottled brown grouse with red eyebrow amongst thick trees and shrubs.
Thousands of caribou like this one traditionally cross the Kobuk River near Onion Portage in the fall. Single caribou looks directly at the camera surrounded by red shrubs, with river and forest in background.
The Great Kobuk Sand Dunes cover 25 square miles within Kobuk Valley, bounded by the Waring Mountains on the south and surrounded by forest and tundra. Accessibility statement: Aerial view of 2 lobes of sand extending into the forest.