Ключевые слова: animal, avian, avian flu, avian influenza, beautiful, bird, bird breeds, bird flu, bird hunting, birdwatching, blue sky, branch, buzzer, common cuckoo, cuckoo, cuculus canorus, eurasian cuckoo, fauna, feather, flight, flow, fly, flying, forest, freedom, green, jump, kukuk, landscape, migratory birds, natural, nature, ornithology, outdoor, sky, songbirds, tree, white, wild, wildlife, wing,