Ключевые слова: aggression, aggressive, anatidae, angry, animal, anser, anseriformes, aves, avian, beak, bill, bird, birds, birdwatching, chick, colored, domestic, fauna, feather, feathers, field, fowl, geese, goose, gosling, gray, graylag, grey, greylag, greylag goose, head, head shot, hiss, hissing, isolated, natural, nature, neck, orange, ornithology, outdoor, plumage, poultry, water, waterfowl, wild, wildfowl, wildlife, wing,