On Jul 18, 2015, Rickwebb from Downingtown, PA wrote:
An absolutely beautiful bird that was almost exterminated in much of the lower 48 states of the USA in the late 1800's and early 1900's for meat and feathers. It survived in Alaska, western Canada, the Pacific Northwest, and Yellowstone Park. The Trumpeter Swan Society, headquartered in Minnesota, and other conservation organizations are restoring it back to Ontario and the upper Midwestern US as far east as Ohio and as far south as Kansas. I've only seen them at Brookfield Zoo just west of Chicago. This is the largest swan species and it makes calls similar to the Canadian Goose and other sounds.