Larus cachinnans

(last update: February 16, 2013)

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

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cachinnans plumages

Larus cachinnans 2CY PNSE August & December 2014, Kołobrzeg, N Poland & Terschelling, the Netherlands.

Bird ringed yellow PNSE, ringed as pullus on May 24 2013 at Kozielno, Paczkow, S-SW Poland, (50°28' N,  16°58' E).

Larus cachinnans 2CY PNSE December 03 2014, Terschelling, the Netherlands. Picture: Jacob Jan de Vries.

Partial moult finished. Compare wing-covert moult to picture below. Most coverts still 2nd gen feathers, but in a partial autumn moult this bird replaced again the inner and central MC and inner Gc, now 3rd gen greyish feathers.

Larus cachinnans 2CY PNSE August 05 2014, Kołobrzeg, N Poland. Picture: Ryszard Rudzionek.

Complete moult with outermost primaries still old, but P1-P6 already new 2nd gen. Still a moult gap in central GC, expsoing juvenile secondaries underneath.