Lesser Black-backed Gull (graellsii & intermedius)

(last update: 09-06-2013)

Lesser Black-backed Gull 2cy, June 24 2013, Noordwijk, the Netherlands.

Bird without ring, hence no provenance on origin. Typical intermedius-like moult: extensive moult on winter grounds, including all wing-coverts, tertials and at least the central rectrices.

Complete moult just started in primaries, which is indicated by missing row of MC, which will now moult to 3rd generation while this bird is only one year old.

Typical intermedius-like moult: extensive moult on winter grounds, including all wing-coverts and tertials. Such birds often have replaced (some) tail-feathers or even secondaries as well, like this bird.

Complete moult just started, P1-P2 fully grown, P3 growing, P4-P5 missing, P6-P10 old juvenile.