Ключевые слова: adult, animal, bird, branch, brush, clean oneself, cleanly, feathering, flag, fullmouth, grooming, habitat, hygiene, luscinia luscinia, mature animal, nature, nobody, older, outdoors, passeriformes, perch, perching, plumage, roost, sit, sitting, thrush nightingale, tree, turdidae, twig, wild, wildlife,