Abstract
Abstract From 2005–2008 we used counts of visible migrants at an inland watchsite (La Gran Piedra) 9 km from the coast and a coastal watchsite (Siboney) to describe the magnitude and timing of Osprey (Pandion haliaetus) autumn migration through southeastern Cuba from 1 August through 30 November. Counts of Ospreys at Siboney averaged 5283 (2006–2008) annually or roughly twice those tallied at other North American watchsites known for the concentration of this species during autumn migration. Nevertheless, simultaneous counts at both watchsites better represent the magnitude of its migration through southeastern Cuba, averaging more than 7000 Ospreys (3 yr). The mean seasonal passage window (95% of the flight) ranged from 78 to 83 d at La Gran Piedra and Siboney. The average peak at both sites occurred in early October, with more than 20 Ospreys/hr. The daily passage window (95% of the daily passage) was more protracted at Siboney, where birds migrated both early in the morning and late in the afternoon, t...
Published Version
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