La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	From the Rarities Committee's files Identification of Dark-breasted Barn Owl in Britain
Auteurs :	Paul R. French, Auteur
Type de document :	Article
Dans :	British Birds (102(9) SEP 2009)
Article en page(s) :	494-503
Résumé :	A BBRC review of the identification criteria of 'Dark-breasted Barn Owls' Tyto alba guttata concluded that only those birds with completely buff underparts were safely identifiable as guttata. Many British claims of guttata show varying amounts of white below, and are thought to originate from the wide intergrade zone between guttata and nominate alba, although variation within alba may also account for some darker-breasted birds. This paper forms the basis for assessing future claims of guttato. Observers and county records committees are encouraged to apply these criteria to previous records where possible.

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