Gerrit Vyn / White-tailed ptarmigan (Lagopus leucurus) two in winter plumage. Mount Rainier, Washington, USA. October.
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Gerrit Vyn / Juvenile Baird's sandpiper (Calidris bairdii) feeding on ice worms on mountain snow field. Mount Rainier National Park, Washington, USA. August.
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Gerrit Vyn / Juvenile Baird's sandpiper (Calidris bairdii) feeding on ice worms on in mountain snow field. Mount Rainier National Park, Washington, USA. August.
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Gerrit Vyn / Juvenile Baird's sandpiper (Calidris bairdii) in alpine tundra during migration. Mount Rainier National Park, Washington, USA. August.