White-faced Whistling Duck (Dendrocygna viduata) adult and duckling, Kruger National Park, South Africa, Africa

White-faced Whistling Duck (Dendrocygna viduata) adults and ducklings, Kruger National Park, South Africa, Africa

A flock of white-faced whistling ducks (Dendrocygna viduata), Zambezi River, Mosi-oa-Tunya National Park, Zambia, Africa

Adult white-faced duck (Dendrocygna viduata), in Chobe National Park, Botswana, Africa

Fulvous Whistling-Duck (Dendrocygna bicolor), adult flapping wings in wetland, Sinton, Corpus Christi, Texas Coast, USA

White-faced Whistling Duck, Dendrocygna viduata

A Black-bellied whistling duck (Dendrocygna autumnalis) or "Sirir Vientre Negro", walks along the shallows on the edge of a floating island in Laguna Ibera, Ibera Natural Reserve, Esteros del Ibera, Corrientes Province, Argentina