Ключевые слова: air sacs, animal, aquatic, australian swan, aves, avian, avifauna, beauty, bird, birding, birdwatching, cygnus, ecology, elegant, fauna, feathered, floating, graceful, habitat, lake, migratory, nature, ornithological, ornithology, plumage, reflection, swimming, water, water surface, waterfowl, wetlands, white swan, wild, wildlife, wings,