La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Resource partitioning between the breeding migrant Cyprus Wheatear, Oenanthe cypriaca, and the passage migrant Spotted Flycatcher, Muscicapa striata, in Cyprus (Aves: Passeriformes) (2010)
Auteurs :	Christoph Randler, Auteur
Type de document :	Article
Dans :	Zoology in the Middle East (49 2010)
Article en page(s) :	33-38
Résumé :	The foraging behaviour of the passage migrant Spotted Flycatcher, Muscicapa striata (Pallas, 1764), was compared with the breeding migrant Cyprus Wheatear, Oenanthe cypriaca (Homeyer, 1884), in Cyprus during May 2009. M. striata preferred higher perches, had shorter distances to the next perch, made more aerial sallying per minute and less perch-pounce foraging, and showed a higher overall foraging rate per minute. Based on a principal component analysis, striata was characterised by high perches and exclusively aerial foraging, while O. cypriaca was characterised by perch-pounce foraging and larger distances to the next perch. Despite some niche overlap, both species differed in some aspects. Six direct encounters between O. cypriaca and M. striata have been observed, and O. cypriaca was always the winner. M. striata showed a higher foraging speed which is in line with observations in resident-migrant bird assemblages in Africa, where migrants also often had a higher foraging speed. By contrast, the breeding species O. cypriaca was more flexible in its foraging strategies.

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