Gabriel Rojo / Fulvous whistling-duck (Dendrocygna bicolor) La Pampa, Patagonia, Argentina

Gabriel Rojo / Fulvous whistling-duck (Dendrocygna bicolor) on water, La Pampa, Argentina.

Gabriel Rojo / Fulvous whistling-duck (Dendrocygna bicolor) La Pampa, Argentina.

Gabriel Rojo / Fulvous whistling-duck (Dendrocygna bicolor) La Pampa, Argentina.

Ben Cranke / Fulvous Whistling Duck (Dendrocygna bicolor) feeding in shallow waters, Mato Grosso, Pantanal, Brazil. July.

Lou Coetzer / Fulvous whistling duck (Dendrocygna bicolor) in flight, Chobe River, Botswana, March.

B&S Draker / Fulvous Whistling-Duck (Dendrocygna bicolor) adult stretching its wings in water. Sinton, Corpus Christi, Coastal Bend, Texas, USA, June.

Duncan Usher / Fulvous Whistling Duck (Dendrocygna bicolor) pair, Northumberland, England

Tom Vezo / Fulvous Whistling Duck (Dendrocygna bicolor) flock flying, North America

John Waters / Fulvous Whistling Duck {Dendrocygna bicolor} at water's edge near reeds, captive, Somerset, UK.

John Waters / Fulvous Whistling Duck {Dendrocygna bicolor} close-up resting head on back, captive, Somerset, UK.

John Waters / Fulvous Whistling Duck {Dendrocygna bicolor} head profile, captive, Somerset, UK.

Gabriel Rojo / Two Fulvous whistling ducks {Dendrocygna bicolor} on water, Chubut province, Peninsula Valdez, Argentina.

Rolf Nussbaumer / Fulvous tree duck {Dendrocygna bicolor} calling, Welder Wildlife Refuge, Sinton, Texas, USA.

Rod Williams / Fulvous whistling-duck (Dendrocygna bicolor), captive, native to The Americas, East Africa, South Asia.

Joel Sartore / Photo Ark / Fulvous whistling duck (Dendrocygna bicolor) portrait, Caldwell Zoo, Texas, USA. Captive.