On the left below some sea birds can be seen roosting on a snag in the Quillayute River. These gregarious animals whistle to one another to warn of perceived danger and live in extensive burrows under the ground. Another common but interesting animal is the chipmunk, pictured below. A number of birds inhabit the park. That's a grouse nestled among the grass in the two pictures below.
Ducks are also easy to find, especially on and around the lakes within the park.
The fellow below was spotted near Lake Crescent. As in other parks of the great Pacific Northwest, the climate and abundant precipitation results in extensive forest which contain extremely large trees. In Olympic National Park the vast forests contain western hemlock, Sitka spruce, red cedar, Douglas fir, Pacific silver fir, and several other species of trees. The first picture below shows subalpine firs on Hurricane Ridge. These trees grow at higher elevations below the tree line in cold, windswept, harsh environments.