Larus cachinnans

(last update: February 16, 2013)

Coordinator:
Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)

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cachinnans plumages

Larus cachinnans 1CY-2CY PCTN October 2012 - March 2013, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Yellow PCTN and metal (PLG) DN28028, ringed as pullus on May 10 2012 at Wyspa na Wisle, Kepa Nadbrzeska, Poland, (50°01' N,  21°13' E). This is a breeding colony in S Poland (near Tarnów), with most birds breeding here cachinnans, but in this area also single records of few michahellis are possible (see PDF). PCTN is classic cachinnans. Probably male.

Recoveries:
PCTN DN 28028 10-5-2012 Wyspa na Wisle, Kepa Nadbrzeska pull 50°01' N 21°13' E
PCTN DN 28028 8-10-2012 Deponie Pohlsche Heide 1cy 52°23' N 08°46' E
PCTN DN 28028 6-11-2012 Deponie Pohlsche Heide 1cy 52°23' N 08°46' E
PCTN DN 28028 19-11-2012 Deponie Pohlsche Heide 1cy 52°23' N 08°46' E
PCTN DN 28028 21-3-2013 Deponie Pohlsche Heide 2cy 52°23' N 08°46' E

below: cachinnans 1CY PCTN October 08 2012, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Extensive moult in coverts.

below: upper TT, inner GC, many MC and LC now moulted in post-juvenile moult. Probably male, together with Herring Gull and Lesser Black-backed Gull.

below: note dark pattern on inner primaries, lacking venetain blind effect, as inner webs are also relatively dark.

below: classic tail for cachinnans.

below: very dominant, probably male.

below: cachinnans 1CY PCTN November 19 2012, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Extensive moult in coverts and upper tertials now finished. Together with 1CY Herring Gull.

below: cachinnans 2CY PCTN March 21 2013, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Now primaries are older and more bleached, still no obvious venetian blind effect in inner primaries in this cachinnans.