Frederique Olivier / Pair of King penguins (Aptenodytes patagonicus) regurgitating and calling with chick nearby, Macquarie Island, Sub-Antarctic Australia.
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Frederique Olivier / Adelie penguin (Pygoscelis adeliae) regurgitating food for its chick, Antarctica.
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Nick Upton / Flesh fly (Sarcophaga sp.) "bubbling" regurgitated stomach contents in order to increase the concentration of its food by evaporating excessive water content. Wiltshire, UK, September.
Tui De Roy / Brown Pelican (Pelecanus occidentalis) feeding chicks by regurgitation in Mangrove (Avicennia sp) nest, Turtle Bay, Santa Cruz Island, Galapagos Islands, Ecuador
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Ashley Cooper / Gentoo penguin (Pygoscelis papua) feeding chicks. February 2019.
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Nick Upton / Black-headed gull (Chroicocephalus ridibundus) male regurgitating food for its mate on their teritory on the margins of a lake, Gloucestershire, UK, April.
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John Chan / Great horned owl (Bubo virginianus) chick coughing up a pellet, Southern California, USA, June.
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John Chan / Female Anna's hummingbird (Calypte anna) returning to feed its chick, regurgitating insects and nectar into its mouth, Southern California, USA, March.
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John Chan / Female Anna's hummingbird (Calypte anna) returning to feed its chick, regurgitating insects and nectar into its mouth, Southern California, USA, March.
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Nick Upton / White stork (Ciconia ciconia) parent regurgitating food and water to its begging chicks. In captive breeding colony raising young birds for UK White Stork reintroduction project at the Knepp Estate. C...
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Nick Upton / White stork (Ciconia ciconia) regurgitating food and water to its begging chicks in its nest. In captive breeding colony raising young birds for UK White Stork reintroduction project at the Knepp Esta...