Rock Ptarmigan
The great foresight of Adolph Murie is evident in this passage from his book The Birds of Mount McKinley, Alaska. Back in 1963, Murie realized that Denali is not an isolated island, free from the environmental hazards created by humans and that its migratory birds faced an increasing number of threats on their migratory journeys and wintering grounds. Murie was not alone in these thoughts. Back in the early 20th century, naturalists and scientists Charles Sheldon, Joseph Dixon, and George Wright all realized the importance of preserving Denali in the rapidly changing world.
Denali's avifauna includes migratory birds from all over the globe and a hardy group of residents. The abundance of birds in Denali ebbs and flows across the seasons, increasing significantly as migrants return to Denali in spring and decreasing when they depart on their autumn migration. Summer birding in Denali rewards visitors with opportunities to view these migratory species in this spectacular northern environment. Birding in winter is slim by the numbers, but high in rewards as observations of pine grosbeaks, mixed flocks of ptarmigan, and perhaps a gyrfalcon or northern goshawk awaits the hardy winter birder.