Interrupted moult of some passerine birds in southern Europe

Abstract

The first records of an interrupted pre-nuptial moult of Bonelli’s Warbler Phylloscopus bonelli are described together with more cases of interrupted moult in Blackcap Sylvia atricapilla, Siskin Carduelis spinus, Pied Flycatcher Ficedula hypoleuca and Subalpine Warbler Sylvia cantillans moltonii. It is stated that some birds of this insular race of Subalpine Warbler can undergo a partial instead of complete post-nuptial moult and, consequently, it is suggested that some could undergo a complete pre-nuptial moult. © 1995 Taylor & Francis Group, LLC.