Results 221 to 230 of about 44,293 (251)

Avian features of <i>Archaeopteryx</i> feeding apparatus reflect elevated demands of flight. [PDF]

Innovation (Camb)
O'Connor JK, Clark AD, Kuo PC, Wang M, Shinya A, Van Beek C, Chang H.   +6 more
europepmc   +1 more source

Yeast-associated skin disease in captive king penguins (Aptenodytes patagonicus) caused by an undescribed Malassezia species in a Swiss zoological garden. [PDF]

BMC Vet Res
Meister SL, Soto S, Rüttener M, Wenker C, Kittl S.   +4 more
europepmc   +1 more source

Twelve days among the "Vampire Finches" of Wolf Island [PDF]

, 1983
Koster, Friedemann, Koster, Heide
core  

Comparative Analysis of Fungal Spore Flora Among Birds, Insects and Air in a Temperate Japanese Forest. [PDF]

Ecol Evol
Bangay R, Matsuoka S, Tuno N.
europepmc   +1 more source

Acoustics of rubbing feathers: the velvet of owl feathers reduces frictional noise.

J Exp Biol
Liu LG, Clark CJ.
europepmc   +1 more source

Signatures of Motion: Decomposition of Adaptive Morphing Flight in Harris’ Hawks

France LA, Shelton J, Heerenbrink MK, Brighton C, Taylor GK.   +4 more
europepmc   +1 more source

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Origin of feathered flight

Paleontological Journal, 2010
The origin of flight in birds and theropod dinosaurs is a many-sided and debatable problem. We develop a new approach to the resolution of this problem, combining terrestrial and arboreal hypotheses of the origin of flight. The bipedalism was a key adaptation for the development of flight in both birds and theropods.
E. N. Kurochkin, I. A. Bogdanovich
openaire   +1 more source

Failure of flight feathers under uniaxial compression

Materials Science and Engineering: C, 2017
Flight feathers are light weight engineering structures. They have a central shaft divided in two parts: the calamus and the rachis. The rachis is a thinly walled conical shell filled with foam, while the calamus is a hollow tube-like structure. Due to the fact that bending loads are produced during birds' flight, the resistance to bending of feathers ...
Kristina Schelestow, Omar P. Troncoso, Fernando G. Torres   +2 more
openaire   +2 more sources

Flight Feather Molt of Turkey Vultures

The Wilson Journal of Ornithology, 2010
Abstract We document the molt sequence of flight feathers in Turkey Vultures (Cathartes aura) based on studies of captive and wild birds, and examination of museum specimens. We found an unusual pattern of primary replacement, which appears to be a modified form of Staffelmauser, or stepwise wing molt.
Robert M. Chandler, Peter Pyle, Maureen E. Flannery, Douglas J. Long, Steve N.G. Howell   +4 more
openaire   +1 more source

Feathers Before Flight

Science, 2013
Fossil data indicate that feathers and their precursors may have evolved over a much longer span than previously thought.
openaire   +1 more source