Ключевые слова: avian, beak, bird, branch, chest, close, colourful bird, common, courtship, delicate, feathers, fine, gaze, horizontal, isolated, look, male, male ruff, migratory, nature, ornithology, outdoors, outside, park, perch, perched, plumage, portrait, preen, ritual, ruff, season, shore bird, sit, sitting, spring, wader, wading bird, white, wildlife,