Ron Bielefeld / Black-bellied Whistling Duck (Dendrocygna autumnalis) flying, Florida
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Thomas Marent / Black-bellied Whistling Duck (Dendrocygna autumnalis), Rio Claro Nature Reserve, Colombia
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Claudio Contreras / Black-bellied Whistling-duck (Dendrocygna autumnalis) group of three in flight, near Bahia Cacaluta, Bahias de Huatulco National Park, Oaxaca, southern Mexico, August
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John Cancalosi / Two Black-bellied whistling ducks (Dendrocygna autumnalis) standing in rain, shaking water from their backs, Louisiana, April.
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John Cancalosi / Two Black-bellied whistling ducks (Dendrocygna autumnalis) standing in rain, scratching and shaking water from their backs, Louisiana, April.
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John Cancalosi / Two Black-bellied whistling ducks (Dendrocygna autumnalis) standing in rain, shaking water from their backs, Louisiana, April.
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John Cancalosi / Two Black-bellied whistling ducks (Dendrocygna autumnalis) standing in rain, shaking water from their backs, Louisiana, April.
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John Cancalosi / Two Black-bellied whistling ducks (Dendrocygna autumnalis) standing in rain, preening and shaking water from their backs, Louisiana, April.
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Nick Hawkins / Black-bellied whistling ducks (Dendrocygna autumnalis) flock in flight, Palo Verde National Park, Costa Rica.
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Marie Read / Black-bellied whistling ducks (Dendrocygna autumnalis) flock of six in flight, Venice, Florida, USA, March.
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Marie Read / Black-bellied whistling-ducks (Dendrocygna autumnalis), group perched amid Spanish moss on bald cypress tree, Lakeland, Florida, USA, January.