Lesser Black-backed Gull (graellsii & intermedius)

(last update: 22-2-2011)

LBBG 3cyAugust 18 2001, Missouriweg - Maasvlakte, the Netherlands.

A 3cy LBBG in the colony showing the average primary moult score for mid August: P5 is missing, P6-P10 are old second generation primaries. The grey saddle formed by the grey scapulars is still obvious. Tertials #1, 2 and 4 have been replaced by more adult-like feathers. Grey feathers can also be found in the inner greater and median coverts, some central medians and a few lessers. Note the brown hue on e.g. the innermost median covert; probably this covert was included in the partial spring moult of the scapulars.