Wood bison are the largest native land mammals in the Western Hemisphere, 10 to 15% heavier than plains bison. Bulls are slightly larger than cows and average around 1,800 pounds, but can get up to 2,000 pounds. Both males and females have short...
First recorded on the Lewis and Clark expedition (1803-1806), the Western tanager prefers open forested areas at low elevations. The male has a vivid colored red head, bright yellow body with striking black wings and tail.
Close view of western bluebird sitting on end of dried wildflower seed head at Cabin Lake R.S. in Deschutes National Forest, Oregon. For more information about migratory birds visit http://www.fws.gov/birds/.
Small, unfeathered head and hooked bill aid these scavengers in consuming carrion. Their weak talons are ill suited for grasping live prey. Vultures do not build nests, but lay their eggs in a sheltered spot; cliff ledge or cave, hollow log, or...
Short-tailed albatross nesting (middle of image) for the first time at Midway Atoll National Wildlife Refuge. The two decoys on either side have been used (along with others and accompanying taped bird calls) on Eastern Island for several years to...
Brown head Reddish breast and underwing coverts Pale belly barred heavily with reddish Reddish lesser uppersecondary coverts appear as reddish shoulder at rest Flight feathers dark above with white barring Flight feathers pale below with dark...
