Florian Möllers / Silhouette of Black tern (Chlidonias niger) adult feeding chick on artificial breeding island, Lake Mueggelsee, Berlin, Germany, July
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Florian Möllers / Silhouette of Black tern (Chlidonias niger) adult feeding chick on artificial breeding island, Lake Mueggelsee, Berlin, Germany, July
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Jim Brandenburg / Black Tern (Chlidonias niger) flying over prairie slough, North Dakota
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Staffan Widstrand / Black tern (Chlidonias nigra) flying in to feed its chick on tfloating vegetation in the Nemunas Delta Nature Reserve, Lithuania.
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Marie Read / Black terns (Chlidonias niger), pair on a perch, vocalizing during courtship (termed 'Erect Posture' display), Montezuma National Wildlife Refuge, New York, USA, May.
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Loic Poidevin / Black tern (Chlidonias niger) pair at nest on floating water lilies. Danube Delta, Romania, May.
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Jussi Murtosaari / Black tern (Chlidonias niger), in flight, Finland, July.
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Staffan Widstrand / Mixed flock of White-winged black tern (Chlidonias leucopterus), Black tern (Chlidonias niger) and Whiskered tern (Chlidonias hybrida) Nemunas River Delta, Lithuania, May.
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Kerstin Hinze / Black tern (Chlidonias niger) feeding young at the nest, Seddinsee, Brandenburg, Germany, June.
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Kerstin Hinze / Black tern (Chlidonias niger) feeding young at the nest, Seddinsee, Brandenburg, Germany, June.
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Kerstin Hinze / Black tern (Chlidonias niger) feeding young at the nest, Seddinsee, Brandenburg, Germany, June.
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Kerstin Hinze / Black tern (Chlidonias niger) feeding young at the nest, Seddinsee, Brandenburg, Germany, June.
