Larus cachinnans

(last update: February 16, 2013)

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

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cachinnans plumages

Larus cachinnans 1P06 adult, May 14 2013, Wytyckie Lake - Urszulin, Poland. Picture: Łukasz Bednarz ringing team.

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For 2012, breeding location of 150 pairs cachinnans, of which 54 adults ringed and 158 pulli in 2012 (pers comm. Łukasz Bednarz).

Breeding bird trapped at the nest. Adult, with dense speckling in iris. Red orbital ring and gape. No red on upper mandible; no black on the upper and no black on the lower mandible. Pale yellow legs.
Deep white tongue on P10 (tongue merged with white tip, breaking through the medial band = thayeri pattern), and broken band on P5; no black on P4. P1-P2 dropped, P1 growing, PMS=3.

In this bird note the obvious good condition of the tips of P3-P4, which are hidden under the tertials in resting birds.