Ключевые слова: animal, behavior, behaviour, bird, birds, birdwatching, branch, clear background, closeup, common cuckoo, cuckoo, cuculiformes, cuculus canorus, field, habitat, isolated, isolated background, male, meadow, mossy, natural, nature, ornithology, outdoor, park, perched, perching, portrait, songbird, spring, stick, summer, tree, twig, uk, wild, wildlife,