Trumpeter Swan

From USFWS_Migratory Birds:

In just a short time, the Federal Duck Stamp Art Contest will begin! Watch live online beginning at 10 AM EST: http://go.usa.gov/3eb7d. Here's a profile of the final eligible species. The largest of the North American waterfowl, the Trumpeter Swan has a 6 ½-foot wingspan. Adults are all white with a long, gracefully curving neck and sloping forehead that ends in a solid black bill. Immature Trumpeter Swans are a dirty white with gray-pink legs that change to yellowish gray and then to dull black. Immature birds have a gray-black, pink tipped bill. Hunted for its feathers through the 1800s, the Trumpeter Swan was reduced to near extinction by the early 20th century, but is relatively common today.

Trumpeter Swan family. Tom Koerner/USFWS