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4cy Caspian Gull



Caspian Gull - Larus cachinnans

1: © Ruud Altenburg, 13-01-04.


Caspian Gull - Larus cachinnans

2: © Ruud Altenburg, 15-01-04.


Caspian Gull - Larus cachinnans

3: © Mars Muusse, 15-01-04.


Caspian Gull - Larus cachinnans

4: © Ruud Altenburg, 13-01-04. Probably older than 4cy, note the black marking on the primary covert.


Caspian Gull - Larus cachinnans

5: © Ruud Altenburg, 13-01-04. This bird too has a black marking on the visible primary covert, but the bill is more adult-like.


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