Results 41 to 50 of about 205,543 (241)
Quantifying the dynamic wing morphing of hovering hummingbird [PDF]
Royal Society Open Science, 2017 Animal wings are lightweight and flexible; hence, during flapping flight their shapes change. It has been known that such dynamic wing morphing reduces aerodynamic cost in insects, but the consequences in vertebrate flyers, particularly birds, are not ...
Masateru Maeda +4 more
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AerospaceA turboprop aircraft is exposed to the risk of bird strikes during flight, which may have a serious impact on flight safety once the bird is sucked into the engine. In this study, the aerodynamic and bird exclusion characteristics of a branched turboprop
Ge Zhou, Zhenlong Wu, Huijun Tan
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Flightless birds are not neuroanatomical analogs of non-avian dinosaurs
BMC Evolutionary Biology, 2018 Background In comparative neurobiology, major transitions in behavior are thought to be associated with proportional size changes in brain regions.
Maria Eugenia Leone Gold +1 more
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Intermittent Gliding in the Hunting Flight of the Kestrel, Falco tinnunculus L. [PDF]
, 1983 The hunting flight of the kestrel (Falco tinnunculus) consists of short bouts of flight at wind speed against the wind with the eyes in a fixed position relative to the ground, and of short flights from one such position to the next.
Daan, S.,, Videler, J.J.,, Weihs, D.,
core +1 more source
Global Ecology and Conservation, 2020 Bird diverter devices were developed to improve power line visibility for birds and reduce their risk of collision. However, differences in efficacy between types of devices, and in some cases conflicting results, place in question the ability of these ...
Miguel Ferrer +5 more
doaj +1 more source
Flight tracks of homing pigeons measured with GPS [PDF]
, 2006 Flight paths of homing pigeons were measured with a newly developed recorder based on GPS. The device consists of a GPS receiver board, a logging facility, an antenna, a power supply, a DCDC converter and a casing.
Hünerbein, Karen von +2 more
core
Flight speeds among bird species: allometric and phylogenetic effects.
PLoS Biology, 2007 Flight speed is expected to increase with mass and wing loading among flying animals and aircraft for fundamental aerodynamic reasons. Assuming geometrical and dynamical similarity, cruising flight speed is predicted to vary as (body mass)(1/6) and (wing
Thomas Alerstam +4 more
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Estimation of unsteady aerodynamics in the wake of a freely flying European starling (Sturnus vulgaris). [PDF]
PLoS ONE, 2013 Wing flapping is one of the most widespread propulsion methods found in nature; however, the current understanding of the aerodynamics in bird wakes is incomplete.
Hadar Ben-Gida +6 more
doaj +1 more source
Flight Mechanics and Control of Escape Manoeuvres in Hummingbirds. I. Flight Kinematics [PDF]
, 2016 Hummingbirds are nature’s masters of aerobatic manoeuvres. Previous research shows that hummingbirds and insects converged evolutionarily upon similar aerodynamic mechanisms and kinematics in hovering.
Cheng, Bo +6 more
core +3 more sources