Results 151 to 160 of about 44,579 (279)

Code: "Tuning for feather loss: wing-tail kinematic adjustments of a moulting red-tailed hawk during perching flight".

A.A. Martinez
openalex   +1 more source

Application of higher harmonic blade feathering for helicopter vibration reduction [PDF]

Higher harmonic blade feathering for helicopter vibration reduction is considered. Recent wind tunnel tests confirmed the effectiveness of higher harmonic control in reducing articulated rotor vibratory hub loads. Several predictive analyses developed in
Powers, R. W.
core   +1 more source

Intercolony and Intra‐Annual Variations in Isotopic Niche of Red‐Footed Boobies Sula sula in the Tropical Indian Ocean

Ecological Research, Volume 41, Issue 3, May 2026.
We compared the diet and assessed geographic and seasonal variations in the isotopic niches of red‐footed boobies across three Indian Ocean atolls. Our results demonstrate plasticity in both diet and trophic niche, likely driven by local environmental conditions, breeding stages, and colony‐specific factors.
Jennifer Appoo, Nancy Bunbury, Jake Letori, Aurelie Hector, Christopher W. Jones, Nicholas A. J. Graham, Sébastien Jaquemet   +6 more
wiley   +1 more source

H2 controller design for a kestrel-inspired ornithopter operating in extreme weather. [PDF]

PLoS One
Abbasi SH, Saudagar AKJ, Abbasi N.
europepmc   +1 more source

A Quantitative Analysis of Flight Feather Replacement in the Moustached Tree Swift Hemiprocne mystacea, a Tropical Aerial Forager

, 2010
Sievert Rohwer, Luan-Keng Wang
openalex   +2 more sources

Interlocking of emarginate primary feathers in flight [PDF]

American Journal of Science, 1906
openaire   +1 more source

Holding a wing horizontal: Roles for muscles of the pectoral girdle other than the main two flight muscles

Journal of Anatomy, Volume 248, Issue 5, Page 830-842, May 2026.
This report explores which muscles of the pectoral girdle are employed to allow birds to hold their wings horizontally with a level aerofoil surface during a glide. Abstract Whilst many birds glide briefly with wings held horizontally, some species maintain this posture for extended periods during soaring.
D. Charles Deeming, María Clelia Mosto
wiley   +1 more source

Fuzzy logic based nonlinear blending hybrid control of a kestrel-inspired ornithopter operating in sinusoidal and dryden gusts. [PDF]

Sci Rep
Abbasi SH, Saudagar AKJ, Nouman A, Hennache ML.   +3 more
europepmc   +1 more source

Feathered Flyer: Integrating Morphological Computation and Sensory Reflexes into a Physically Simulated Flapping-Wing Robot for Robust Flight Manoeuvre

, 2007
Yoonsik Shim, Phil Husbands
openalex   +2 more sources

Weak Nuclear Divergence Despite Pronounced Mitochondrial Divergence Within a Widespread Desert‐Inhabiting Palearctic Lark (Aves: Alaudidae)

Zoologica Scripta, Volume 55, Issue 3, Page 389-404, May 2026.
ABSTRACT The Bar‐tailed Lark Ammomanes cinctura is a polytypic bird species with a wide distribution. One of its three subspecies, A. c. arenicolor, has previously been found to show deep mitochondrial divergence between its geographically most distant populations, from Morocco and Saudi Arabia, respectively.
Zongzhuang Liu, Silvia Colombo, Loïs Rancilhac, Arya Shafaeipour, Ali Haghani, B. Irene Tieleman, Pierre‐André Crochet, Alban Guillaumet, Urban Olsson, Per Alström   +9 more
wiley   +1 more source