Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

LBBG 3cy SVS 810679xMay 03 2004, EMO Maasvlakte, the Netherlands. 

A ringed intermedius 3cy from Sweden, ringed as nestling at Yttre Tistlarna, Gotenborg on 8th July 2002. Ring not completely read, but series used on that location. It's an average 3cy LBBG in May and the colour of bare parts are typical for 3cy LBBG. Head and under parts are most white with streaking on the hind-neck. Most scapulars and mantle are grey with limited brown immature feathers. In the coverts, most medians have been replaced for dark grey feathers with still some old barred feathers. P1 and P2 are third generation, moulted on the wintering grounds. P3-P10 are also present but old second generation. Primary moult was arrested, probably for migration. P4 and P5 show small white tips. All secondaries except two are all third generation, the white tips obvious on the image, as the inner primaries. R1-R4 and R6 are white, R5 is older second generation-like.