La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Using radio telemetry to describe the fall migration of Eared Grebes
Auteurs :	W. S. Boyd, Auteur ; S. D. Schneider, Auteur ; S. A. Cullen, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (71(4) FAL 2000)
Article en page(s) :	702-707
Langues:	Anglais
Résumé :	Eared Grebes (Podiceps nigricollis) marked with small radio-transmitters in 1995 and 1996 at a breeding site in south-central British Columbia, Canada, were subsequently detected in fall at Mono Lake (California) and Great Salt Lake (Utah). At least 50% of all marked birds were detected on Mono Lake, and data collected in mid-October suggested that this proportion was consistent across years. These observations largely confirm a fall migration pattern that had been previously based on leg-band returns. Radio-tracking also confirmed that some movement occurred between Mono Lake and Salton Sea. In terms of the number of marked birds detected, the internal antenna-type transmitter produced superior results over other (attachment) protocols but their short range (

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