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1 August 2000 SATELLITE TRACKING OF CORY'S SHEARWATER MIGRATION
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Abstract

Transmitters were attached to four adult male Cory's Shearwaters (Calonectris diomedea) caught at their breeding sites off Crete, Greece, in autumn 1998. The birds had left the Mediterranean by the beginning of December. Two were last recorded in the eastern tropical Atlantic in January/February. The other two wintered east of the Mid-Atlantic Ridge, one at about 10°N, the other one in equatorial waters, and could be tracked until return migration in March/April. The seasonal variation in travel speed is in accordance with a conventional pattern of migration with phases of migration and wintering, rather than continuous movement throughout the nonbreeding cycle. The birds left the Mediterranean later and wintered farther north than expected. We suggest that the known longitudinal cline in body size, morphology, and vocalizations of Cory's Shearwater may also be found in migration behavior.

Dietrich Ristow, Peter Berthold, Dean Hashmi, and Ulrich Querner "SATELLITE TRACKING OF CORY'S SHEARWATER MIGRATION," The Condor 102(3), 696-699, (1 August 2000). https://doi.org/10.1650/0010-5422(2000)102[0696:STOCSS]2.0.CO;2
Received: 21 October 1999; Accepted: 1 April 2000; Published: 1 August 2000
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