Larus cachinnans

(last update: February 16, 2013)

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Larus (cachinnans) mongolicus AL10 adult, May 26-28 2012, Uvsijn Khar Us Nuur, Mongolia (48°05'N, 92°18'E). Picture: Andreas Buchheim.

Birding Mongolia (Andreas Buchheim, Tuvshin, Lutz von der Heyde) have been ringing and adding wing-tags at the lake on 26-28 May. They now completed gull ringing with the 240th gull wing-tagged during this expedition, bringing the overall number of wing-tagged Mongolian Gulls to 870.

Mongolicus adult AL10. Relatively much black on primaries, and also small but sharply demarcated black spots on centres of greater primary coverts. White tips on outermost primaries very small. Small mirror and full sub-terminal band on P10. Short pale tongue on P10, leaving broad medial band. Almost full band on P4 (just broken). No black on outerweb of P1-P3. No 'white moons', no white tongue tips on P6-P8. Moult score: P1 missing, P2-P10 present, PMS=1.