La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Great Blue Heron on Scilly: new to Britain
Auteurs :	E. Ashley Fisher, Auteur
Type de document :	Article
Dans :	British Birds (103(4) APR 2010)
Article en page(s) :	206-212
Résumé :	A first-winter Great Blue Heron Ardea herodias was found at Lower Moors, St Mary's, Isles of Scilly, on 7th December 2007, during a period of sustained westerly winds that extended across the North Atlantic. Its arrival coincided with a deep depression, which moved along the eastern seaboard of the USA bringing snowfall and freezing temperatures, conditions likely to initiate cold-weather movements in North America. The age, timing and circumstances of its discovery all point to this being a wild bird that arrived without the benefit of ship assistance, and it has been accepted into Category A of the British List.

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