(last update: March 12, 2012)
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PDF's Larus canus
1cy June - August 1cy September - October 1cy November - December
2cy January - February 2cy March - April 2cy May - August 2cy September - October 2cy November - December
3cy January - February 3cy March - April 3cy May - August 3cy September - December
adult January - February adult March - April adult May - August adult September - October adult November - December
Measurements indicate heinei.