Ключевые слова: bird, bird black, bird in water, bird swimming, birding, black, black bird, black feathers, black plumage, black water bird, common coot, conservation, coot, daylight, ecology, endothermic, environment, eurasian coot, european, feathers, fulica atra, homeothermic, lake, marsh, natural, nature, outdoors, outside, park, pond, rallidae, spring, swim, vertebrate, water, water bird, water birds, wetlands, white beak, white bill, wild, wild bird, wild birds, zoology,