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Keywords: Bird flight
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Journal Articles
J Exp Biol (2023) 226 (21): jeb245643.
Published: 9 November 2023
... to navigate through narrow gaps, which lets them continue flapping and maintain level flight. They shift to a tucked coasting strategy as they gain experience. Bird flight Calypte anna Clutter Hummingbird Maneuver Obstacle negotiation Beim Scholarship Jane Wiley Scholarship...
Includes: Supplementary data
Journal Articles
J Exp Biol (2023) 226 (9): jeb227355.
Published: 26 April 2023
... review causes and consequences of wear, damage and moult gaps that temporarily affect wing morphology and flight performance. Bird flight Bat flight Wing wear Aerodynamics Kinematics Drag Vetenskapsrådet http://dx.doi.org/10.13039/501100004359 2020-03707 Knut och Alice...
Includes: Supplementary data
Journal Articles
J Exp Biol (2023) 226 (2): jeb244215.
Published: 23 January 2023
... the flight hall), as observed in turning flight ( Ros and Biewener, 2017 ). Taking time t =0 as the first data point, we therefore modelled the bird's flight trajectory beginning from time t =τ max , to ensure that the same section of flight was simulated for all tested values of τ. We were thereby able...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (1): jeb242280.
Published: 4 January 2022
... European Research Council http://dx.doi.org/10.13039/100010663 679355 3D dynamics modelling Centre of mass Inertia tensor Bird flight Summary: Demonstration of the use of calibrated computed tomography to accurately quantify the three-dimensional centre of mass and moments of inertia...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (21): jeb225839.
Published: 12 November 2020
... increases net power. Pectoralis major Work loop Skeletal muscle Bird flight Flying animals routinely perform locomotor behaviors that require adjustments to the aerodynamic force they produce. Behaviors such as accelerating and decelerating, maneuvering, changing altitude or carrying...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (9): jeb185488.
Published: 8 May 2019
... of flying birds is presented and used to analyse the gliding flight of a barn owl and peregrine falcon. Bird flight Stereo-photogrammetry Flight dynamics Flight control Wing geometry Tyto alba Falco peregrinus Birds primarily generate the forces required to support and control...
Includes: Supplementary data
Journal Articles
J Exp Biol (2010) 213 (11): 1930–1939.
Published: 1 June 2010
... stall effect, and the transition into flow separation. Also, the influence of the delayed stall and flow separation was clearly visible in measurements of instantaneous net force over the wingbeat cycle. Here, we show that, even at reduced frequencies as low as those of large bird flight, unsteady...
Journal Articles
J Exp Biol (2008) 211 (2): 258–266.
Published: 15 January 2008
... dynamics. We thank Tony Price for building the flight simulator, and `Cossack' and Louise Crandal – eagle and handler – for their involvement in the bird flight experiments. We thank Rafał Żbikowski, Holger Krapp and Simon Laughlin for many helpful discussions, and Gregg Abate, Johnny Evers...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2007) 210 (23): 4136–4149.
Published: 1 December 2007
... of flight control and aerodynamic aspects of flow control. Few previous studies of bird flight have considered the function of the covert feathers (but see Brown and Fedde,1993 ), despite the fact that these make up almost as large a proportion of the total wing surface area as the primaries...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2007) 210 (6): 1075–1083.
Published: 15 March 2007
... 2007 © The Company of Biologists Limited 2007 2007 bird flight power curve metabolic rate The rates of metabolic energy release required to support vertebrate flapping flight are far greater than those of other modes of locomotion. The high metabolic cost of flight is especially...
Journal Articles
J Exp Biol (2004) 207 (24): 4255–4268.
Published: 15 November 2004
..., Sweden 14 9 2004 © The Company of Biologists Limited 2004 2004 wingbeat kinematics vortex wake thrush nightingale Luscinia luscinia DPVI aerodynamics bird flight bird wind tunnel An extensive set of experiments on the flight aerodynamics of a thrush nightingale...
Journal Articles
J Exp Biol (2000) 203 (11): 1767–1776.
Published: 1 June 2000
... 2000 10 05 2000 © 2000 by Company of Biologists 2000 length–force coracobrachialis posterior muscle bird flight flight evolution flight muscle flight control pigeon Columba livia The evolution of powered flight in birds is associated with extensive modification...
Journal Articles
Journal Articles
J Exp Biol (1995) 198 (3): 775–781.
Published: 1 March 1995
... on a model wing in a wind tunnel: the feathers that form the slotted tips reduce induced drag by acting as winglets that make the wings non-planar and spread vorticity both horizontally and vertically. 22 09 1994 ©The Company of Biologists Limited 1994 bird flight emarginated feathers...
Journal Articles
J Exp Biol (1993) 176 (1): 55–76.
Published: 1 March 1993
... muscles during avian evolution to facilitate its specialization for rectricial control in flight. * Present address: Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA. 22 10 1992 © 1993 by Company of Biologists 1993 bird flight electromyography...
Journal Articles
J Exp Biol (1992) 165 (1): 21–41.
Published: 1 April 1992
... appear to swing forward as the wing span increases ( Hankin, 1913 ). If the centre of pressure for the aerodynamic force on the wings also moves forward, an increase in wing span would cause the head of the bird to pitch up unless some compensatory change occurred. bird flight centre of area...
Journal Articles
J Exp Biol (1992) 164 (1): 19–38.
Published: 1 March 1992
... climbing bird species was calculated to be in the range 16–41 joules per kilogram muscle mass, showing a significant positive correlation with body mass. 04 10 1991 © 1992 by Company of Biologists 1992 bird flight climbing performance flight power fuel load load carrying muscle...
Journal Articles
J Exp Biol (1990) 149 (1): 469–489.
Published: 1 March 1990
... by Company of Biologists 1990 bird flight glide angle gliding performance lift coefficient polar curve profile drag sinking speed wind tunnel Soaring birds take advantage of air currents to remain aloft for long periods without flapping their wings. In still air, however, they glide...
Journal Articles
J Exp Biol (1990) 149 (1): 449–468.
Published: 1 March 1990
... of Biologists 1990 bird flight drag coefficient gliding performance Harris’ hawk parasite drag polar curve wind tunnel A complete analysis of avian aerodynamics divides a flying bird into its various parts and describes the aerodynamic forces on them. The first step in the analysis...
Journal Articles