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Updated: Mar 6, 2026

A Video Surveillance System to Monitor Breeding Colonies of Common Terns Sterna Hirundo
Published on: July 22, 2018
Temporal and spatial pattern of common tern (Sterna hirundo) foraging in the Wadden Sea
Peter H Becker1, Dietrich Frank1, Stefan R Sudmann1
1Institut für Vogelforschung, An der Vogelwarte 21, W-2940, Wilhelmshaven 15, Germany.
Abstract:
In 1989, 313 foraging flights of common terns in the Wadden Sea were radio-tracked. The feeding trips lasted on average 115 min covering about 30 km per flight. Completely tracked flights had a mean radius of 6.3 km. The terns preferred distinct foraging areas in the Wadden Sea. These were visited at site-specific phases of the tidal cycle resulting in a temporal and spatial pattern of foraging, caused by the site-specific and tide-related fluctuations of food availability.
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