Ключевые слова: avian, bird, bird watching, black, close up, closeup, color, colour, corvid, corvidae, corvus, corvus frugilegus, crisp, crisps, eating, fauna, feeding, frugilegus, horizontal, natural, nature, ornithology, outdoor, outdoors, perched, perching, pest, plumage, portrait, potato chip, rock, rook, scavenger, scavenging, vermin, wild, wildlife,