Migratory strategy of Bluethroats, Luscinia svecica, in eastern Fennoscandia. Part 2: response to acoustic markers and habitat selection at stopover

I.N. Panov and N.S. Chernetsov

Proceedings of the Zoological Institute RAS, 2010, 314(2): 173–183 · https://doi.org/10.31610/trudyzin/2010.314.2.173

Full text

Abstract

Response of bluethroats to the playback of species-specific song and the role of acoustic markers in habitat selection at autumn migratory stopovers were studied. The birds were mist-netted after the song playback and under the control conditions (no song). First captures and recaptures of birds were discussed. The song playback attracts bluethroats in the end of nocturnal migratory flights and the very beginning of a stopover and does not attract birds during stopover. Acoustic marker plays a significant role in habitat selection at the first stages of stopover: The tape-lured bluethroats concentrate around the sound source and then distribute over surrounding area. The possible reasons of response of migrating birds to the acoustic marker, as well as higher proportion of adults and lower proportion of fat birds among tape-lured bluethroats in comparison to the birds trapped under the control conditions have been discussed.

Key words

acoustic markers, bluethroat, Fennoscandia, habitat selection, stopover, strategy of migration

Submitted March 27, 2009 · Accepted February 11, 2010 · Published June 25, 2010

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