Ernie Janes / Black headed gulls (Larus ridibundus) in flight photographed with a wide angle lens, East Anglia, UK, January.
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Nick Upton / Black-headed gulls (Chroicocephalus ridibundus), Common gull (Larus canus) and Lesser black-backed gulls (Larus fuscus) resting on a frozen lake, Wiltshire, UK, February.
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Nick Upton / Black-headed gull (Chroicocephalus ridibundus) pair courting on lake margin, calling and head bowing, Gloucestershire, UK, June.
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Fabrice Cahez / Black-headed gull (Chroicocephalus ridibundus) in flight, bords de Loire, France, April.
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Nick Upton / Black-headed gull (Chroicocephalus ridibundus) flock flying over a frozen lake in falling snow, Wiltshire, UK, March.
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Nick Upton / Juvenile Black-headed gull (Chroicocephalus ridibundus) resting on a snow-dusted lake edge in falling snow, Wiltshire, UK, March.
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Nick Upton / Black-headed gull (Chroicocephalus ridibundus) trio in winter plumage flying past reeds fringing a lake in falling snow, Wiltshire, UK, March.
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Nick Upton / Black-headed gulls (Chroicocephalus ridibundus) resting and preening on a frozen lake, Gloucestershire, UK, February.
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Nick Upton / Juvenile Black-headed gull (Chroicocephalus ridibundus) in winter plumage walking on a frozen lake in falling snow, Wiltshire, UK, March.
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Robin Chittenden / Black-headed gull (Larus ridibundus) in snow, Norfolk, England, UK. March.
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Robin Chittenden / Black-headed gull (Larus ridibundus) group on frozen pond, Norfolk, England, UK. March 2018
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Dave Bevan / Black-headed gull (Chroicocephalus ridibundus) collecting nest material before flying out of frame, Lincolnshire, England, UK, June.
