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 hybrid X007 1CY, October 05 2016, Katwijk, the Netherlands. Picture: Mars Muusse.

Yellow X007 and metal DEH Hiddensee EA-202407 ringed as pullus on June 07 2016 in a mixed colony of Laußig, eastern Duitsland (51,34N 12,38E). Male.

Earlier recoveries:
August 31 2016, Katwijk, the Netherlands.

Probably both argentatus (for sure) and cachinnans involved. Voice was like cachinnans (although not a full match) but many traits are in line with argentatus. See also HERE (in Dutch).
More Herring Gull than Caspian Gull, due to stubby bill with strong gonys angle, square head like in Herring with quite some streaking on the crown, late moult in scapulars where the last replaced feathers again show a bold anchor shaped pattern on a buffish base (not grey without transversal bars), post stamp notching on the tertials, and this pattern repeated on the greater coverts (where Caspian normally show 'smooth' pale fringes.