Larus cachinnans

(last update: February 16, 2013)

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cachinnans in Poland

cachinnans in Holland

cachinnans rings

cachinnans plumages

1cy August
1cy September
1cy October
1cy November
1cy December

2cy January
2cy February
2cy March
2cy April
2cy May
2cy June
2cy July
2cy August
2cy September
2cy October
2cy November
2cy December

3cy January
3cy February
3cy March
3cy April
3cy May
3cy June
3cy July
3cy August
3cy September
3cy October
3cy November
3cy December

sub-adult January
sub-adult February
sub-adult March
sub-adult April
sub-adult May
sub-adult June
sub-adult July
sub-adult August
sub-adult September
sub-adult October
sub-adult November
sub-adult December

adult January
adult February
adult March
adult April
adult May
adult June
adult July
adult August
adult September
adult October
adult November
adult December

Larus cachinnans (near-) adult, September 2006, Histria, Romania. Picture: Chris Gibbins.

Maybe cachinnans, maybe hybrid. P10 almost thayeri, very good for cachinnans. The pattern on P10 is relatively stable in pure Caspian Gull and hence critical for identification. However, there is some variability in this feature. This bird, for example, shows a thayeri pattern on the outermost primary (P10) as well as P9.