La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	[Breeding habitat and phenology of the Rock Thrush Monticola saxatilis in the northern Alps (Bregenzerwald, Vorarlberg, Austria).]
Auteurs :	Alwin Schoenenberger, Auteur ; Hans-Guenther Bauer, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (123(1) 2002)
Article en page(s) :	1-7
Résumé :	Since the end of the 1970s the Rock Thrush can again be regarded as a regular, albeit rare, breeding bird of the northern alpine regions of Vorarlberg (western Austria). Several breeding sites are regularly occupied by at least one pair each with obvious breeding success. Nesting sites and habitat requirements of the species in the study area of Bregenzerwald are described, and the three earliest breeding attempts ever recorded in the Alps are documented. According to the data presented here, breeding of the Rock Thrush may start as early as end of April or, in bad-weather conditions, at high altitudes, or in the case of replacement clutches, as late as end of July. Despite this rather wide temporal frame for breeding attempts there were no indications of genuine second broods in this area, although these are known from southern European breeding areas. A more detailed picture may arise from colour ringing studies in the most accessible sites in Bregenzerwald, which are planned for the future.

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