Larus cachinnans

(last update: February 16, 2013)

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

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cachinnans plumages

Larus cachinnans 1CY-2CY PELZ September-October 2011 & August 2012, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Yellow PELZ and metal PLG DN-26994; ringed as pullus on May 24 2011 at Zwirownia Zakole A, Jankowice - Babice, Poland (50,02N 19,28E). Zwirownia = gravel pit, this colony is situated between the towns of Babice and Jankowice in a gravel pit.

Recoveries:
PELZ DN 26994 24-5-2011 Zwirownia, Zakole A, Jankowice Babice 50°02' N 19°28' E
PELZ DN 26994 13-9-2011 Deponie Pohlsche Heide 52°23' N 08°46' E
PELZ DN 26994 13-10-2011 Deponie Pohlsche Heide 52°23' N 08°46' E
PELZ DN 26994 28-10-2011 Deponie Pohlsche Heide 52°23' N 08°46' E
PELZ DN 26994 2-8-2012 Deponie Pohlsche Heide 52°23' N 08°46' E
PELZ DN 26994 9-8-2012 Deponie Pohlsche Heide 52°23' N 08°46' E
PELZ DN 26994 9-8-2012 Minden, Osthafen 52°18' N 08°56' E

In this area are mixed breeding colonies (near Katowice), with far most birds breeding here are cachinnans, but in this area also records of very few michahellis from the south (e.g. ringed female from Italy) and argentatus from eastern Germany are possible (see PDF). PELZ is classic cachinnans.

below: cachinnans 1CY PELZ September 13 2011, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Dark uppering with dark outerwebs on inner primaries (no lozenges), barred axillaries and bold pattern on new scaps.

below: cachinnans 1CY PELZ October 13 2011, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Getting white headed now with characteristic boa in the neck. Few MC replaced as well.

below: cachinnans 1CY PELZ October 28 2011, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Venetian blind effect on inner primaries only visible in fully streched wing.

below: cachinnans 2CY PELZ August 02 2012, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

Complete moult to 2nd winter plumage. P7/P10. All coverts but also the new scapulars still very 2nd gen like in pattern (barred patterns on coverts and anchor shapes on scaps). Moult gap in central GC closed.

Green ringed cachinnans in background.

below: with 1CY cachinnans PKSD and unringed 2CY cachinnans (right). Note bill colours.

below: cachinnans 2CY PELZ August 09 2012, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.

P10 still present. Note pale brown iris.