La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Review Of Dutch Avifaunal List: Deletion Of Moltoni's Warbler (2017)
Auteurs :	Steve C. V. Geelhoed, Auteur ; Enno B. Ebels, Auteur
Type de document :	Article
Dans :	Dutch Birding (39(2) 2017)
Article en page(s) :	97
Résumé :	On 23-26 May 1987, a male 'subalpine warbler' Sylvia subalpina/cantillans/inornata was singing and calling at Kennemerduinen, Bloemendaal, Noord-Holland. The bird was identified and accepted 15 years later as Moltoni's Warbler S subalpina based on the written description of its rattling call, a regularly repeated tsrrr or krrrr resembling Eurasian Wren Troglodytes troglodytes (interestingly, subalpina was not yet described as a valid taxon when this bird was observed, neither were its diagnostic vocalisations). The record was reconsidered in 2014-16 by the Dutch rarities committee (CDNA) following a revision of all subalpine warblers. The CDNA decided that the lack of sound-recordings and the possible confusion with a rattle-like call of Eastern Subalpine Warbler S cantillans made it unsafe to accept this bird as subalpina. Also, the description of the plumage was considered insufficient to exclude cantillans and Western Subalpine Warbler S inornata with certainty. Up to and including 2016, there are (only) seven records of subalpina north of south-eastern France (where it occurs as a migrant): in Belgium (1), England (1), Germany (1) and Scotland (4).

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