Nick Upton / Greylag goose (Anser anser) walking over mudflats fringing a lake, Gloucestershire, UK, May.
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Nick Upton / Greylag goose (Anser anser) sleeping on grassy, flower-carpeted margin of a lake in late afternoon spring sunshine, Gloucestershire, UK, May.
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Nick Upton / Greylag goose (Anser anser) head portrait in evening light, Gloucestershire, UK, May.
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Nick Upton / Gadwall (Anas strepera) drake walking on muddy margins of a lake, Gloucestershire, UK, May.
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Nick Upton / Gadwall (Anas strepera) drake courting a female, raising his head to quack, Gloucestershire, UK, April.
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Nick Upton / Female Gadwall (Anas strepera) duck dabbling in shallow water around a lake edge, Gloucestershire, UK, May.
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Nick Upton / Gadwall (Anas strepera) drake reflected in lake water as it swims, Gloucestershire, UK, May.
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Tui De Roy / Mineral lake with White-cheeked pintails (Anas bahamensis) during quiet volcanic period, on volcanic caldera, Fernandina, Galapagos, Ecuador.
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Konrad Wothe / Mute Swan feeding (Cygnus olor) Upper Bavaria, Germany, Europe
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Konrad Wothe / Aggressive Mute swan (Cygnus olor) landing, Upper Bavaria, Germany, Europe
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Konrad Wothe / Aggressive Mute swan (Cygnus olor) Upper Bavaria, Germany, Europe
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Konrad Wothe / Mute Swan (Cygnus olor) taking off, Upper Bavaria, Germany, Europe
