Compensation for lateral drift due to crosswind in migrating European Bee-eaters

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SAPIR, Nir, Nir HORVITZ, Martin WIKELSKI, Roni AVISSAR, Ran NATHAN, 2014. Compensation for lateral drift due to crosswind in migrating European Bee-eaters. In: Journal of Ornithology. 155(3), pp. 745-753. ISSN 2193-7192. eISSN 1439-0361. Available under: doi: 10.1007/s10336-014-1060-x

@article{Sapir2014Compe-29698, title={Compensation for lateral drift due to crosswind in migrating European Bee-eaters}, year={2014}, doi={10.1007/s10336-014-1060-x}, number={3}, volume={155}, issn={2193-7192}, journal={Journal of Ornithology}, pages={745--753}, author={Sapir, Nir and Horvitz, Nir and Wikelski, Martin and Avissar, Roni and Nathan, Ran} }

Ziehende Bienenfresser kompensieren die durch Seitenwinde verursachte seitliche Abdrift 2015-02-02T10:02:24Z Compensation for lateral drift due to crosswind in migrating European Bee-eaters 2015-02-02T10:02:24Z Wikelski, Martin Nathan, Ran Horvitz, Nir 2014 eng Avissar, Roni Horvitz, Nir Sapir, Nir Avissar, Roni Nathan, Ran Wikelski, Martin Billions of seasonally migrating birds and insects use two principal modes of flight, i.e., flapping and soaring–gliding. Flight mode is known to have strong effects on energy expenditure and speed of migration, yet its influence on the migratory track has rarely been investigated. Using radio telemetry, we studied the effects of crosswind on European Bee-eaters (Merops apiaster) during their spring migration with respect to different flight modes. Flapping, soaring–gliding, and mixed flight in which the birds flapped during gliding were distinguished by radio signals while the birds were flying en route over southern Israel. The regional atmospheric modeling system was applied in high spatial (1 km 9 1 km) and temporal (5 min) resolution to estimate winds encountered aloft. We analyzed data from 11 birds that flew over a total distance of 810 km and found that lateral drift due to side wind did not differ among birds engaged in different flight modes. Overall, there was almost no effect of crosswind speed on bird lateral speed, as the regression slope was 0.31 (indicting mild lateral drift) and the regression’s R<sup>2</sup> was 0.01. Therefore, we conclude that migrating bee-eaters compensated for crosswind during their spring migration and that this response was not dependent on bird flight mode. Sapir, Nir

Dateiabrufe seit 02.02.2015 (Informationen über die Zugriffsstatistik)

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