La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Long-term constancy of two rain-call dialects of the Chaffinch Fringilla coelebs in Finnish and Russian Karelia: a consequence of site-fidelity?
Auteurs :	J. Sorjonen, Auteur
Type de document :	Article
Dans :	Ornis Fennica (78(2) 2001)
Article en page(s) :	73-82
Langues:	Anglais
Résumé :	According to old Finnish ornithological literature, two different rain-call dialects of the Chaffinch existed in eastern Finland at the end of the 19th century and the beginning of the 20th century. In this work I studied the current existence and range of distribution of different rain-call dialect areas in Finnish and Russian Karelia. Rain-call vocalization is strongly connected to breeding time and uttered only by males. However, males sang the full song five times as often as they uttered the rain-call in Finland and three times as often as they uttered the rain-call in the Karelian Isthmus. The proportion of rain-call of all vocalizations (song and rain-call) increased from morning towards evening and from spring to the middle of summer. Males that uttered the "huit" dialect sang the real song relatively more often than males that uttered the "krik" dialect. In the study area of about

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