La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	A macrorhynchos-like Eurasian Nutcracker (Nucifraga caryocatactes) in the Dolomites with a very abraded ring: an aged immigrant, or a locally born bird? (2018)
Titre original:	A macrorhynchos-like Eurasian Nutcracker (Nucifraga caryocatactes) in the Dolomites with a very abraded ring
Auteurs :	Tiziano Londei, Auteur
Type de document :	Article
Dans :	Rivista Italiana di Ornitologia (88(2) June 2018)
Article en page(s) :	47-49
Résumé :	The origin of the ringed bird, photographed at Passo Gardena on 28 July 2016, remains unknown. However, considering that 1) irruptions of the macrorhynchos subspecies into the region have not occurred for years compatible with the degree of abrasion of the ring; 2) dispersed macrorhynchos individuals rarely survive for long periods outside their population range; 3) intermediate morphological traits between macrorhynchos and nominate caryocatactes appear in the area; and 4) the nominate subspecies may be derived, the possibility of a locally born representative of a hybrid population, or a bird with ancestral traits, should be considered for future studies.
En ligne :	https://sisn.pagepress.org/index.php/rio/article/view/377

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