Bird parents work hard to protect their young, even before they hatch. For many birds, especially those that nest on the ground like Rock Ptarmigans, this means camouflage. Not only is the female cryptically colored to blend into the tundra environment, her nest and eggs also blend in almost invisibly. This provides excellent protection from visual predators while the female is away. These birds are well camouflaged all year and turn pure white in the snow-covered winter.
Recorded by Luke J Eberhart-Phillips, Macaulay Library