Alan Murphy/ BIA / Bufflehead (Bucephala albeola) male flying, Alaska

Alan Murphy/ BIA / Bufflehead (Bucephala albeola) male flying, Alaska

Connor Stefanison / Bufflehead duck (Bucephala albeola) male swimming along Lost Lagoon, Stanley Park, Vancouver, British Columbia, Canada. February.

Steve Gettle / Bufflehead (Bucephala albeola) male, North Dakota

Charlie Summers / Bufflehead (Bucephala albeola) male and female in a drainage canal, Bosque del Apache, New Mexico, December.

Charlie Summers / The tail of a drake Bufflehead duck (Bucephala albeola) is fanned as it dives in a Bosque del Apache, New Mexico drainage canal.

Charlie Summers / Male Bufflehead Duck (Bucephala albeola) portrait. Taken at Bosque del Apache, New Mexico, December.

Jan Wegener / Bufflehead (Bucephala albeola) drake, Vancouver, Canada

Glenn Bartley / Bufflehead (Bucephala albeola) male flying, British Columbia, Canada

Matthew Studebaker / Bufflehead (Bucephala albeola) female, Ontario, Canada

Steve Gettle / Bufflehead (Bucephala albeola) male in breeding plumage, Saginaw Bay, Michigan

Steve Gettle / Bufflehead (Bucephala albeola) male swimming, Island Lake Recreation Area, Michigan