Trumpeter Swans

From Great River and Clarence Cannon National Wildlife Refuges:

Several Trumpeter Swans have been enjoying the waters of the Delair Division lately. Although relatively common today, the Trumpeter Swan was hunted for its feathers throughout the 1600s - 1800s, to near extinction by the early 20th century. The bird's largest flight feathers made what were considered to be the best quality quill pens.