ptarmigan

/ˈtɑːrmɪɡən/
noun
  1. A bird of the grouse family that lives in cold, northern regions. Its feathers turn white in winter to blend in with the snow.
    • We spotted a ptarmigan hopping across the snowy tundra.
    • Hikers in Alaska sometimes see a ptarmigan darting among the rocks.
    • The ptarmigan's white winter plumage helps it hide from predators.
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