Ключевые слова: america, anatidae, animal, avian, biodiversity, biology, bird, branta, canada, canadensis, close, closeup, colorful, conservation, dam, detail, ecology, ecosystem, face, feathers, geese, goose, graceful, lake, maryland, nature, north, ornithology, pair, plumage, pond, profile, proud, serene, two, up, water, wetlands, wild, wildlife, zoology,