Covey of Willow Ptarmigan
Alaska, USA
Like quail and partridges, ptarmigan are ground-dwelling game birds. The word "covey" specifically emphasizes their tight-knit nature and habit of staying together for survival. This is seen most commonly in late summer and early autumn when ptarmigan travel in family units ranging from 6 to 20 birds. Staying in a covey creates a "confusion effect" when flushed, making it difficult for predators like hawks or foxes to single out one target.
Ptarmigan are the only birds in the world that change their plumage to match the seasons three distinct times a year. This continuous molting cycle ensures they remain nearly invisible against the shifting colors of the Arctic and alpine tundra. By November, ptarmigan are almost pure white to blend with the snow. Starting in April or May, they molt into a cryptic brown, gold, or gray pattern that mimics rocks, soil, and summer vegetation. Females typically molt into their brown summer dress several weeks before males, allowing for them to be fully camouflaged while sitting on nests during the early spring thaw. In late summer and fall, they transition into a finely scaled gray plumage to match the lichen-covered rocks and frost-dusted tundra before the first heavy snows.
Photo © copyright by Dr. Edward Mikol.
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