Results 31 to 40 of about 205,543 (241)
Ecology and Evolution, 2021 The continuing global expansion of electricity networks increases the risk of bird collisions with power lines. Several field studies have demonstrated that this risk can be reduced by marking lines with flight diverters.
Moritz Mercker, Klaus Jödicke
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Methodology for calculating the number of migratory birds in the territory of the wind farms of the Azov region using information and communication technology [PDF]
E3S Web of Conferences, 2020 A methodology has been developed for calculating the number of migratory birds in the territory of wind power farms and the StatBirds1 program for statistical analysis of bird monitoring results at the wind power farm “Prymorsk-1” on the coast of the Sea
Yeremieiev Volodymyr +3 more
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Nature, 1870 IN reply to J. H.'s query respecting the flight of the albatross mentioned in a paper of mine on the flight of birds, read at the November meeting of the Norfolk and Norwich Naturalists' Society, I beg to assure him that no bird is able to fly without flapping its wings.
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Take-off mechanics in hummingbirds (Trochilidae) [PDF]
, 2004 Initiating flight is challenging, and considerable effort has focused on understanding the energetics and aerodynamics of take-off for both machines and animals.
Altshuler, Douglas L. +2 more
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Risk Assessment of Bird Collisions with a Wind Turbine Based on Flight Parameters
Elektronika ir ElektrotechnikaThe study addresses the challenge of bird collisions with wind turbines by developing an autonomous risk assessment method. The research uses data from the stereoscopic Bird Protection System (BPS) to anticipate potential collision threats by analysing ...
Grzegorz Madejski +4 more
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Nature, 1873 IN NATURE, vol. viii. p. 86, Mr. J. Guthrie calls attention to, and asks explanation of, a curious phenomenon in the flight of birds observed by him :—“In the face of a strong wind,” he says, “the hawk remained fixed in space without fluttering a wing for at least two minutes. After a time it quietly changed its position a few feet with a slight motion
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The Flight of Birds and Other Animals
Aerospace, 2015 Methods of observing birds in flight now include training them to fly under known conditions in wind tunnels, and fitting free-flying birds with data loggers, that are either retrieved or read remotely via satellite links.
Colin J. Pennycuick
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The Energy Benefits of the Pantograph Wing Mechanism in Flapping Flight: Case Study of a Gull [PDF]
, 2015 Bird wings generally contain a 4-bar pantograph mechanism in the forearm that enables the wrist joint to be actuated from the elbow joint thus reducing the number of wing muscles and hence reducing the wing inertia and inertial drag.
Sattler, Gene D.
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International Journal of Smart and Nano MaterialsDielectric elastomers (DE), renowned for their lightweight, rapid response, high energy density, and efficient conversion, have garnered significant attention in the realm of avian flight bionics.
Haihao Ci, Zhan-Sheng Guo
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Archaeopteryx feather sheaths reveal sequential center-out flight-related molting strategy
Communications Biology, 2020 Thomas Kaye et al. use Laser-Stimulated Fluorescence and fossil evidence from the oldest known bird, Archaeopteryx, to document the oldest record of molting, demonstrating that a sophisticated molting strategy developed unexpectedly early on in the ...
Thomas G. Kaye +2 more
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