Results 141 to 150 of about 44,293 (251)
Courtship display behavior influences tail myology in Centrocercus minimus (Gunnison sage‐grouse)
Journal of Anatomy, EarlyView.Courtship displays among birds are widespread, particularly those which incorporate raised tail feathers for extended periods of time. The Gunnison sage‐grouse (Centrocercus minimus) is such a species. When we compared the tail muscles of the sage‐grouse to birds which do not engage in erected tail fan postures, both morphology proportional mass ...
Alexander D. Clark +3 more
wiley +1 more source
Distributed feather-inspired flow control mitigates stall and expands flight envelope
Proceedings of the National Academy of SciencesMultiple rows of feathers, known as the covert feathers, contour the upper and lower surfaces of bird wings. These feathers have been observed to deploy passively during high angle of attack maneuvers and are suggested to play an aerodynamic role. However, there have been limited attempts to capture their underlying flow physics or assess the function ...
Girguis Sedky +4 more
openaire +2 more sources
The Monetary Policy–Commodities Nexus: A Survey
Journal of Economic Surveys, EarlyView.ABSTRACT This survey synthesizes evidence on the bidirectional links between commodity markets and monetary policy. On the commodities‐to‐policy side, we review how shocks to energy, food, and metals pass through to inflation, inflation expectations, economic activity, and financial stability in state‐dependent ways that vary by shock type, exposure ...
Martin T. Bohl +2 more
wiley +1 more source
Size of the ulna and taxonomic order affect vane dimensions of secondary remiges in birds
Avian ResearchThe number of secondary feathers varies among orders of birds with some orders exhibiting a positive relationship with ulna length, whereas in other orders secondary number is invariant.
D.C. Deeming, E.P. Bayliss, E. Ketley
doaj +1 more source
Active adhesion improves adaptive flight for feathered wings
Abstract Birds change the shape of their wings to adapt to dynamic environments, such as dense cities and forests. Engineers have explored using avian-informed designs with feather-based wing morphing to achieve similar capabilities with small aircraft.
Kevin Haughn +3 more
openaire +1 more source
It’s All About Me (Or Is It Us?): The Narrative Antecedents of the Locus of Celebrity
Journal of Management Studies, EarlyView.Abstract For two decades, research on individual and organizational celebrity has flourished. However, the literature remains limited in several ways. First, despite recent gains regarding the antecedents of celebrity, current theory does not fully explain why celebrity resides at a specific locus (i.e., at the individual‐ and/or organizational level).
Laura D’Oria +3 more
wiley +1 more source
Journal of Sleep Research, EarlyView.ABSTRACT Sleep is essential for normal physiological functioning, and sleep deprivation is typically compensated by increasing subsequent sleep duration and/or intensity. However, a recent study showed that barnacle geese (Branta leucopsis) exhibit seasonal variation in sleep homeostasis, with full recovery of sleep after sleep deprivation in summer ...
Robin Pijnacker +4 more
wiley +1 more source
Medical and Veterinary Entomology, EarlyView.A study of louse flies in the United Kingdom, Isle of Man, and Ireland found 212 different interactions between Hippoboscidae and their hosts, of which 70 were previously unrecorded. No louse flies were found on aquatic species of birds. Host‐switching to gulls (Laridae) has occurred during a period in which these species have started relying on ...
Denise C. Wawman +2 more
wiley +1 more source
Comparison of flight data and analysis for hingeless rotor regressive inplane mode stability [PDF]
Analytical and experimental data obtained during the development of the AH-56A covering stability of the regressive inplane mode, including coupling with other modes such as body and rotor plunge are reported.
Anderson, W. D., Johnston, J. F.
core +1 more source