Common Goldeneye (Bucephala clangula)
Wing Whistling: The wings of Common Goldeneyes make a distinctive whistling sound as they fly, hence the colloquial name "Whistler".
Common Goldeneye, wing whistle, February 21, 2010. Vernon Marsh, Waukesha County, Wisconsin.
Elliott, Lang and Kevin Colver. 2008. The Calls of Ducks and Geese. Stackpole Books, Mechanicsburg, PA.