
The Trumpeter Swan is the heaviest native North American bird and is on average the largest extant waterfowl species on earth. It is the North American counterpart and a close relative of the Whooper Swan of Eurasia, and even has been considered the same species by some authorities.
Similar species: Ducks, Geese, Etc.
By travismorhardt
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Uploaded Sep 7, 2014. Captured Sep 1, 2014 18:13 in Grand Loop Road, Yellowstone National Park, Yellowstone National Park, WY 82190, USA.