Cited by 79Avian ecology and behaviorWildlife Ecology and ConservationBiomimetic flight and propulsion mechanisms

The Use of Low-Level Jets by Migrating Birds

Liechti, Felix, Schaller, Esther·1999·Naturwissenschaften

Abstract

Birds flying at high altitudes have occasionally been observed above mountain areas and the open sea. For the first time the regular occurrence of migrating birds flying within a low-level jet at heights of 5000 to almost 9000 m asl. have now been verified by radar above the Negev desert in southern Israel. Tracks of rather large birds with wing-beat frequencies of 5-6 Hz were measured to have horizontal flight speeds up to 50 m/s. Visual observations, seasonal occurrence, and wing-beat frequencies allowed to associate them with small species of the order Ciconiiformes (mainly Ardeidae) and possibly with members of the Laro-Limicolae group. These wading birds seem prone to continuing nocturnal migration into daytime under favorable conditions and to make use of high wind speeds at sometimes extreme altitudes.

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Crossref · 10.1007/s001140050673

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8 of 8 references verified0 citation errors · 0 not checkable

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  • Some migrants would ascend up to 9000 m to encounter air jets in which they could fly with groundspeeds greater than 45 meters/second.

    “Furthermore, some migrants would ascend up to 9000 m to encounter air jets in which they could fly with groundspeeds greater than 45 meters/second (Liechti and Schaller, 1999).”

    From The physiology and biomechanics of avian flight at high altitude (2006) · cites this paper as Liechti and Schaller, 1999

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Authors
Liechti, F., & Schaller, E.
Affiliations
Swiss Ornithological Institute (CH)
Venue
Naturwissenschaften
Published
1999-11-03
Volume
86
Issue
11
Pages
549-551
ISSN
  • 0028-1042 (ISSN-L)
  • 1432-1904
OpenAlex
W2012774621
Cited by
79
References
9
Citations by year
2025: 1 · 2024: 2 · 2022: 2 · 2021: 7 · 2020: 1 · 2019: 2 · 2018: 6 · 2017: 7 · 2016: 2 · 2015: 3 · 2014: 25
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Locations
  • Die Naturwissenschaften (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Ecology › Avian ecology and behavior
  • Physical Sciences › Environmental Science › Ecology › Wildlife Ecology and Conservation
  • Physical Sciences › Engineering › Aerospace Engineering › Biomimetic flight and propulsion mechanisms
Keywords
bird migration, low-level jet, high-altitude flight, wading birds, Ciconiiformes, herons, Limicolae, nocturnal migration, flight speed, wingbeat frequency, wind speed, Negev
MeSH terms
Altitude, Animals, Birds, Flight, Animal, Seasons, Wind

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