Wind effects on the migration routes of trans-Saharan soaring raptors: geographical, seasonal, and interspecific variation

Current Zoology
Javier Vidal-MateoVicente Urios

Abstract

Wind is among the most important environmental factors shaping birds' migration patterns. Birds must deal with the displacement caused by crosswinds and their behavior can vary according to different factors such as flight mode, migratory season, experience, and distance to goal areas. Here we analyze the relationship between wind and migratory movements of three raptor species which migrate by soaring-gliding flight: Egyptian vultureNeophron percnopterus, booted eagleAquila pennata, and short-toed snake eagleCircaetus gallicus. We analyzed daily migratory segments (i.e., the path joining consecutive roosting locations) using data recorded by GPS satellite telemetry. Daily movements of Egyptian vultures and booted eagles were significantly affected by tailwinds during both autumn and spring migrations. In contrast, daily movements of short-toed eagles were only significantly affected by tailwinds during autumn migration. The effect of crosswinds was significant in all cases. Interestingly, Egyptian vultures and booted eagles showed latitudinal differences in their behavior: both species compensated more frequently at the onset of autumn migration and, at the end of the season when reaching their wintering areas, the proportion ...Continue Reading

Citations

May 23, 2020·Current Zoology·Alessandro TedeschiDiego Rubolini
Feb 23, 2020·Proceedings. Biological Sciences·Johannes KrietschBart Kempenaers
Oct 21, 2016·The Journal of Animal Ecology·Wouter M G VansteelantWillem Bouten
Sep 12, 2018·Movement Ecology·Pablo A E Alarcón, Sergio A Lambertucci
May 17, 2017·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Judy Shamoun-BaranesWouter M G Vansteelant
Jul 14, 2017·Journal of the Royal Society, Interface·Rory GibbRobin Freeman
May 27, 2020··Emmanuel PietrigaVanessa Peña-Araya

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