Adult Caspian gull in roost on F2 - arrow points to diagnostic tongues on primaries (p9 folded over p10 in the photo hence the appearance of a broad black band separating the tip from the mirror - p10 in reality had a complete white tip which is just visible immediately below).
Also the regular 1w Caspian gull roosted on F1.
Thomas Miller, Ewan Urquhart, Ian Lewington
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