Ключевые слова: alive, animal, aves, backdrop, background, beak, beautiful, beauty, bill, biodiversity, biology, bird, birding, birdwatching, blue, brown, cliff, conservation, day, ecology, environment, environmental, fauna, feathers, flight, flying, horizontal, life, living, mud, natural, nature, nests, organism, ornithology, outdoors, outside, passerine, red, scene, science, songbird, swallow, vertebrate, warmblooded, white, wild, wildlife, zoology,