气候变化领域集成服务门户(CCPortal): Extreme altitudes during diurnal flights in a nocturnal songbird migrant

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DOI	10.1126/science.abe7291
	Extreme altitudes during diurnal flights in a nocturnal songbird migrant
	Sjöberg S.; Malmiga G.; Nord A.; Andersson A.; Bäckman J.; Tarka M.; Willemoes M.; Thorup K.; Hansson B.; Alerstam T.; Hasselquist D.
发表日期	2021
ISSN	0036-8075
起始页码	646
结束页码	648
卷号	372 期号:6542
英文摘要	Billions of nocturnally migrating songbirds fly across oceans and deserts on their annual journeys. Using multisensor data loggers, we show that great reed warblers (Acrocephalus arundinaceus) regularly prolong their otherwise strictly nocturnal flights into daytime when crossing the Mediterranean Sea and the Sahara Desert. Unexpectedly, when prolonging their flights, they climbed steeply at dawn, from a mean of 2394 meters above sea level to reach extreme cruising altitudes (mean 5367 and maximum 6267 meters above sea level) during daytime flights. This previously unknown behavior of using exceedingly high flight altitudes when migrating during daytime could be caused by diel variation in ambient temperature, winds, predation, vision range, and solar radiation. Our finding of this notable behavior provides new perspectives on constraints in bird flight and might help to explain the evolution of nocturnal migration. © 2021 American Association for the Advancement of Science. All rights reserved.
英文关键词	altitude; diel variation; flight activity; migration route; nocturnal activity; sea level change; songbird; Acrocephalus arundinaceus; Africa; altitude; animal behavior; Article; cosmological phenomena; daytime; desert; diurnal flight; environmental temperature; evolution; Mediterranean Sea; migratory species; nonhuman; predation; Sahara Desert; sea level; solar radiation; songbird; vision; wind; animal; flying; photoperiodicity; physiology; population migration; songbird; Mediterranean Sea; Sahara; Acrocephalus; Acrocephalus arundinaceus; Passeri; Africa, Northern; Altitude; Animal Migration; Animals; Flight, Animal; Mediterranean Sea; Photoperiod; Songbirds; Wind
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245509
作者单位	Department of Biology, Lund University, Lund, Sweden; Center for Macroecology, Globe Institute; University of Copenhagen, Evolution and Climate, Copenhagen, Denmark; Nature Research Centre, Vilnius, Lithuania
推荐引用方式 GB/T 7714	Sjöberg S.,Malmiga G.,Nord A.,et al. Extreme altitudes during diurnal flights in a nocturnal songbird migrant[J],2021,372(6542).
APA	Sjöberg S..,Malmiga G..,Nord A..,Andersson A..,Bäckman J..,...&Hasselquist D..(2021).Extreme altitudes during diurnal flights in a nocturnal songbird migrant.Science,372(6542).
MLA	Sjöberg S.,et al."Extreme altitudes during diurnal flights in a nocturnal songbird migrant".Science 372.6542(2021).