Lesser Black-backed Gull graellsii TS1, April 22 2002, Dintelhaven, Maasvlakte, the Netherlands (51.59N,04.02E). 

An adult ringed, left green TS1. A very tidy bird, lacking moult gaps in the scapulars and coverts. Note the brown hue on the inner and central greater coverts. As soon as data on this ringed individual are available, these will be added.

An adult bird ringed left green TS1, probably in 6cy. As soon as data become available, those data will be added. The primary tips are relatively fresh. Note the small dark hint on the upper mandible. Note also the difference in age in the inner median coverts, with brown hued feathers between the neat grey rows. In this case, the code of the ring turned slightly yellow.