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Dusky Grouse: Large, chicken-like bird, dark gray to blue-gray plumage, red-orange eye combs, black squared tail with narrow pale gray terminal band. Patch of violet-red skin on neck surrounded by white feathers is displayed during courtship. Formerly (with Sooty Grouse) known as Blue Grouse.
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Greater Sage Grouse: Largest North American grouse, has scaled gray-brown upperparts, white breast, black throat, bib, and belly, and yellow combs above eyes. Large, white collar-like patch on breast conceals two yellow air sacs displayed during courtship. Tail feathers are long and pointed.
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