Miguel Rodríguez Esteban
Abstract The potential for confusion between dark-headed examples of ‘Grey-headed Wagtail’ Motacilla flava thunbergi and ‘Black-headed Wagtail’ M. f. feldegg is highlighted by a well-photographed bird on Cabrera, in the Balearic Islands. In certain light conditions and/or during a brief encounter, even good photos may not confirm identification. Great caution is needed, and views/images from different positions and angles are crucial when evaluating a potential vagrant feldegg. A sound recording or detailed description of the call is particularly valuable.
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