Larus cachinnans

(last update: February 16, 2013)

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

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cachinnans plumages

Larus cachinnans 437P May 06 2013, Gatovo - Minsk, Belarus. Picture: Dmitry Goncharov.

Green ring 437P was recorded at Gatovo colony. Ringed in Poland, probably in the series of metal PLG DN-25xxx used at Zwirownia Zakole, Poland (50°02'N, 19°28'E). Zakole = gravel pit, Zwirownia is along the river Oder. Probably ringed as pullus on May 22 2008, but ring data still pending.

Jizz suggests female.

Below: roof top nesting in Belarus.

This is what local ornithologist Dmitry says:
Last season I found on the roofs of industrial buildings near Minsk (Belarus), several breeding colonies (CG + HG + LBBG). The largest of these was located on the roof size 240х480 m in Gatovo village and included 1,830 nests cachinnans + argentatus + fuscus and part of the mixed pairs. I often have questions accurately identify taxa. Nests are located mainly at the base of rooflights, ventilators, often among the vegetation on the the broken stone-gravel. Most nests contained three eggs (the norm), and some even six (two females - adult + 4 cy). Hatching chicks began in May. Frequently observed bird deaths on various factors: man-made traps, overheating of the roof, falling flying chicks.

Last update: 2013 count is 2160 pairs!