Results 11 to 20 of about 44,579 (279)

Hummingbird-inspired flapping wings composed of multiple flight feathers

open access: diamondThe Proceedings of Mechanical Engineering Congress, Japan, 2022
Hayato Yoshida   +2 more
openalex   +2 more sources

Feather-inspired flow control device across flight regimes

open access: yesBioinspiration & Biomimetics, 2023
Abstract Bio-inspired flow control strategies can provide a new paradigm of efficiency and adaptability to overcome the operational limitations of traditional flow control. This is particularly useful to small-scale uncrewed aerial vehicles since their mission requirements are rapidly expanding, but they are still limited in terms of ...
Ahmed K Othman   +3 more
openaire   +2 more sources

Long-term effects of chronic light pollution on seasonal functions of European blackbirds (turdus merula) [PDF]

open access: yes, 2013
Light pollution is known to affect important biological functions of wild animals, including daily and annual cycles. However, knowledge about long-term effects of chronic exposure to artificial light at night is still very limited.
A Dawson   +48 more
core   +10 more sources

Aerodynamic performance of the feathered dinosaur Microraptor and the evolution of feathered flight [PDF]

open access: yesNature Communications, 2013
Understanding the aerodynamic performance of feathered, non-avialan dinosaurs is critical to reconstructing the evolution of bird flight. Here we show that the Early Cretaceous five-winged paravian Microraptor is most stable when gliding at high-lift coefficients (low lift/drag ratios).
Dyke, Gareth   +5 more
openaire   +3 more sources

Feather growth rate and mass in nearctic passerines with variablemigratory behavior and molt pattern [PDF]

open access: yes, 2012
Bird species vary greatly in the duration of their annual complete feather molt. However, such variation is not well documented in birds from many biogeographic areas, which restricts our understanding of the diversification of molt strategies.
Barta Z.   +8 more
core   +2 more sources

Validating the use of intrinsic markers in body feathers to identify inter-individual differences in non-breeding areas of northern fulmars [PDF]

open access: yes, 2016
Acknowledgments We thank Claire Deacon, Gareth Norton and Andrea Raab for help with laboratory work at the University of Aberdeen, and Barry Thornton and Gillian Martin for running stable isotope analysis at the James Hutton Institute.
Graham, Isla M.   +4 more
core   +2 more sources

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