Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
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.