Whistling wings and the lonesome chattering of ducks are the true signals of autumn migration across America.
This SongCard is for use with the BirdSong IdentiFlyer and features the following duck calls:
Canvas-back,
Common Goldeneye,
Redhead,
Bufflehead,
Ring-necked Duck,
Ruddy Duck,
Lesser Scaup,
Common Merganser,
Greater Scaup and
Hooder Merganser
