Ключевые слова: animal, biology, bird, bird preening, common loon, crooked lake, diving bird, ethology, fauna, feathers, gavia immer, great northern loon, lake, loon, michigan, natural, nature, ornithology, ottawa national forest, outdoor, preening, remote, sylvania wilderness, u p, upper michigan, water, waterfowl, wild, wilderness, wildlife, wing feathers, zoology,