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British Birds Primary spacing as a field identification criterion for Iberian Chiffchaff

Marcel Gil-Velasco, Auteur

Dans British Birds (110(8) August 2017)

Differences in the primary spacing between Iberian Chiffchaff Phylloscopus ibericus and Common Chiffchaff P. collybita are described, based on measurements from good-quality photographs of birds on the breeding grounds. In some situations, this [...]

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Article

Primary moult in Iberian Chiffchaff as a means of ageing and identification

Joan Castelló Massip, Auteur ; Marcel Gil-Velasco, Auteur

Dans British Birds (110(8) August 2017)

Iberian Chiffchaff Phylloscopus ibericus has become an annual vagrant to Britain, but in some cases the identification of this subtle species remains extremely challenging. First-winter Iberian Chiffchaffs undertake a partial moult on the winter[...]

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