American Black Duck (Anas rubripes) [XC89663]
by Paul Driver from Kyker Bottoms Wildlife Refuge, Maryville, Tennessee, United States (flight call)
American Black Duck (Anas rubripes) [XC523513]
by William Whitehead from East Windsor, Mercer County, New Jersey, United States (call, courtship whistle, hee)
Subspecies
Forms a superspecies with Mallard (Anas platyrhynchos), Meller's Duck (Anas melleri) and Yellow-billed Duck (Anas undulata). Sometimes considered a subspecies of Mallard (Anas platyrhynchos), with which frequently interbreeds.