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Adult Caspian Gull Larus cachinnans
Not all Caspians show such a large amount of white as this; there may be a small sub-terminal bar near the tip and a wider band across the primary.
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Adult Caspian Gull Larus cachinnans |
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| Adult Caspian Gull, 5th January, 2000 | ||||||
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| Pay close attention to the pattern of the longest primary P10 on the far wing, which shows the characteristic pattern of Caspian - a long white tip and white "tongue" along the inner web, with a narrow black cross bar and thin black outer web.
Not all Caspians show such a large amount of white as this; there may be a small sub-terminal bar near the tip and a wider band across the primary.
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