Coordinators:
Kjeld Tommy Pedersen (Denmark)
Chris Gibbins (Scotland)
Frank Majoor (Netherlands)
Mars Muusse (Netherlands)
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PDF's Larus canus
1cy June - September
1cy October - December
2cy January - March
2cy April - August
2cy September - December
3cy January - March
3cy April - August
3cy September - December
adult Janauary - March
adult April - August
adult September - December
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Common Gull heinei 3cy, January 2010, Copenhagen, Denmark. Picture: Kjeld Tommy Pedersen.
Measurements indicate heinei. Heinei more often tend to show immature markings to a large extent in 2nd winter.
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Common Gull Larus canus canus & L.c. heinei