La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	'Thayer's Gull' in Essex: new to Britain
Auteurs :	Steve Arlow, Auteur
Type de document :	Article
Dans :	British Birds (109(6) JUN 2016)
Article en page(s) :	324-337
Résumé :	The observation of an adult Thayer's Gull' Larus glaucoides thayeri at Pitsea Landfill, Essex, on 6th November 2010 is described and illustrated.This bird was eventually accepted as the first record for Britain; one other record, of a juvenile in Lincolnshire in April 2012, has also been accepted and others are still being considered. The taxonomic history of this taxon is summarised; it is still treated as a race of Iceland Gull L glaucoides by BOU, but most other authorities now consider it a separate species.

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