Roosevelt elk is a regional form of American elk described from Washington's Olympic Mountains. Olympic National Park lists mountain meadows and forests through lowland rain forest as habitat and notes a diet of ferns, shrubs, lichens, and grasses.
The adult male type described in 1897 had nearly completed its change from autumn to winter coat, with a black head and legs. Its antlers were described as massive, with short, straight main beams.
Olympic National Park describes elk using mountain meadows and forests down to lowland temperate rain forest. Its account lists ferns, shrubs, lichens, and meadow grasses as food.
An extinction-risk assessment has not been added yet.