Juan Manuel Borrero / Illustration of threatened species of birds of Spain. Iberian Guillemot (Uria aalge ibericus), Cantabrian capercallie (Tetrao urogallus cantabricus), White backed woodpecker (Dendrocopos leucotos), Be...
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Hanne & Jens Eriksen / Slender billed gull (Chroicocephalus genei) in flight, Oman, February
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Hanne & Jens Eriksen / Slender billed gull (Chroicocephalus genei) in flight, Oman, February
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Graham Eaton / A group of Slender-billed Gulls (Chroicocephalus genei) on rocks near Cape of Good Hope, South Africa, November
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Robin Chittenden / Slender billed gull (Chroicocephalus genei) in flight, Western Division, Gambia, March
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Robin Chittenden / Slender billed gull (Chroicocephalus genei) on shoreline, Western Division, Gambia, March
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Robin Chittenden / Slender billed gull (Chroicocephalus genei) in flight, Western Division, Gambia, March
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Jean E. Roche / Aerial view of artificial island built for nesting colony of Slender billed gull (Chroicocephalus genei) Petite Camargue, Southern France, June 2007
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Robin Chittenden / Slender Billed Gull (Chroicocephalus genei) in flight. Gambia, Africa, February.
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Robin Chittenden / Slender Billed Gull (Chroicocephalus genei) in flight. Gambia, Africa, February.
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Jean E. Roche / Slender billed gulls (Chroicocephalus genei) in flight over sea, Camargue, France, April
