Ключевые слова: aggressive, animal, area, autumn, beak, bird, black, body, branta canadensis, breed, brown, canada, canadian, clouds, colony, danger, dangerous, day, duck, eco, ecology, environment, fall, family, feather, five, flock, flying, geese, giant, goose, habitat, head, herbivorous, migrate, migration, migratory, national, natural, nature, north america, safe, safety, sky, species, summer, symbol, white, wild, wildlife, wing,