vear Baltic Gull at Amsterdam

• Main Author: D Photographic H
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2006
• Subjects: Ranen; Ruud; Lesser black-backed gull
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.668.6357; http://gull-research.org/papers/papers3/Baltic_Gull_DutchBirding2007_95-97.pdf

Erasmusgracht, Amsterdam, the Netherlands. lt had been colour-r inged ( ' red CJC9') on 28 June 2006 as a 'young out of the nest ' at Por i, F in land (61:39 N 21:23 E), a locat ion wi th in the breeding range of Bal t ic Cul l (cf Olsen & Larsson 2OO4). Prior to being recorded in Amsterdam, it had been observed in Anza, Agadir, Morocco, on 23 February 2006 (Seppo Ni i ranen in I i t t). lf accepted by the Dutch rarities committee (CDNA), CJC9 wi l l become the s ixth Bal t ic Cul l for the Netherlands. Altenburg et al (2006) provided an over-v iew of the previous records (only b i rds colour-r inged as pullus from known provenance are considered acceptable, on current view). This paper presents a descr ipt ion, d iscusses the ident i f icat ion and puts CJCg's moult pattern into a wider perspective. Hereafter, I í fuscus is referred to as fuscus; the western Lesser Black-backed Gull taxa L f graellsii and I f intermedius are referred ïo as graellsii and intermedius, respectively. The description is based on field notes by Ruud Altenburg and photographs by RA, Arnoud van den