Ключевые слова: africa, animal, ardea, asia, beak, belgium, bird, blue, china, cinerea, europe, fish, foraging, france, frog, germany, gray, great, grey, herodias, heron, hunting, india, japan, lagoon, lake, long, looking, marsh, nature, neck, netherlands, park, pond, river, russia, south, southern, stalking, taiwan, uk, wader, wading, water, wetland, white, wildlife, wings,