Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

Lesser Black-backed Gull 2CY, September 12 2015, Utrecht, the Netherlands.

Complete moult: P7 equals P6 in length, P9-P10 old juvenile. S1-S2 new, small block of central secondaries still old juvenile. All juvenile tail-feathers have been shed, tail growing 2nd gen.