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1 October 2000 USING RADIO TELEMETRY TO DESCRIBE THE FALL MIGRATION OF EARED GREBES
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Abstract

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 (<2 km) means that they will be effective only at sites where the birds are both abundant and concentrated such as Mono Lake, Great Salt Lake, and Salton Sea.

W. Sean Boyd, Saul D. Schneider, and Sean A. Cullen "USING RADIO TELEMETRY TO DESCRIBE THE FALL MIGRATION OF EARED GREBES," Journal of Field Ornithology 71(4), 702-707, (1 October 2000). https://doi.org/10.1648/0273-8570-71.4.702
Received: 10 June 1999; Accepted: 1 November 1999; Published: 1 October 2000
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