Results 91 to 100 of about 205,543 (241)

Role of wing morphing in thrust generation

Theoretical and Applied Mechanics Letters, 2014
In this paper, we investigate the role of morphing on flight dynamics of two birds by simulating the flow over rigid and morphing wings that have the characteristics of two different birds, namely the Giant Petrel and Dove Prion.
Mehdi Ghommem, Muhammad R. Hajj, Philip S. Beran, Ishwar K. Puri   +3 more
doaj   +1 more source

A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany

eLife, 2019
The Late Jurassic ‘Solnhofen Limestones’ are famous for their exceptionally preserved fossils, including the urvogel Archaeopteryx, which has played a pivotal role in the discussion of bird origins.
Oliver WM Rauhut, Helmut Tischlinger, Christian Foth   +2 more
doaj   +1 more source

‘Dinosaur-bird’ macroevolution, locomotor modules and the origins of flight [PDF]

, 2021
Sergio M. Nebreda, Manuel Hérnandez Fernández, Jesús Marugán‐Lobón   +2 more
openalex   +1 more source

Vertical profiles time series of bird density and flight speed vector (01.01.2018-01.01.2019)

, 2020
Raphaël Nussbaumer
openalex   +1 more source

Optimizing avian flight dynamics with a synergetic bio-inspired and machine learning approach

Frontiers in Robotics and AI
This study presents a composite numerical and machine learning framework to enhance the aerodynamic performance of a bio-inspired flapping wing. The wing kinematics were extracted from biological flight data using a multi-step process: the DeepLabCut ...
Waleed Khalid, Valentina Leontiuk, Innokentiy Kastalskiy, Innokentiy Kastalskiy, Victor B. Kazantsev, Victor B. Kazantsev, Victor B. Kazantsev   +6 more
doaj   +1 more source

Ecological management of bird strike risk in Hangzhou Airport, based on field survey and diet analysis

Frontiers in Ecology and Evolution
Bird strikes represent a significant hazard to aviation safety, with potential consequences including aircraft damage, operational disruptions, and safety risks.
Yixuan Ying, Guoheng Zhong, Lei Chen, Miaopin Lv, Shidi Qin, Xilai Zhou, Han Lv, Ke He   +7 more
doaj   +1 more source

Lissaman, Shollenberger and formation flight in birds [PDF]

, 2016
Steven J. Portugal
openalex   +1 more source

The Flight of Birds [PDF]

Nature, 1893
WITH reference to an extract from Science on the flight of birds, which appeared in your “Notes” of February 16, I agree with the writer of that extract that the rapidity with which the generality of birds travel is often considerably over-estimated.
openaire   +1 more source

Effects of low level military training flights on wading bird colonies in Florida [PDF]

, 1984
During 1983 and 1984 the effect of low level military training flights on the establishment. size and reproductive success of wading bird colonies was studied in Florida.
Black, Barbara, Bohall, Petra G., Collopy, Michael W., Percival, H. Franklin, Tiller, Anita A.   +4 more
core  

Cytoskeletal signaling as a shared pathway for convergent genetic mechanisms underlying loss of flight in birds

Poultry Science
Loss of flight in birds is an adaptive feature of evolutionary processes. Morphological and physiological differences are known among flightless bird species; however, the genetic mechanisms behind them are largely unexplored.
Simin Zhao, Lan huang, Yizhou Hu, Hao Bai, Guobin Chang, Qixin Guo   +5 more
doaj   +1 more source