Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

Lesser Black-backed Gull sub?-adult, July 18 2013, Katwijk, the Netherlands.

Unringed, hence no provenance about origin, but in all respects nice match to local "Dutch intergrade" Lesser Black-backed Gull breeding at Katwijk.

Bird in complete moult: P1/P4 (P2 growing). Black centres on greater primary coverts possible for true adults as well, see known age birds HERE. In this individual the greater primary coverts have large dark centres, maybe a young adult 5Cy-6CY? Except from primary coverts, in general very adult-like.