More than 200 species of birds that pass through or use the park as a breeding ground have been recorded. These bird species include both golden and bald eagle as well as northern spotted owl, harlequin duck, Clark's nutcracker, trumpeter swan and seasonal appearances of western tanager, Cassin's vireo, pine grosbeak, woodpeckers such as the pileated woodpecker and primarily ground-dwelling birds such as the sooty grouse. The peregrine falcon is the only species found in the park that is federally designated as an endangered species, while the marbled murrelet and northern spotted owl are listed as threatened.