Search Results - "Nudds, R. L"

AN INTERSPECIFIC TEST OF ALLEN'S RULE: EVOLUTIONARY IMPLICATIONS FOR ENDOTHERMIC SPECIES by Nudds, R. L, Oswald, S. A

“…Ecogeographical rules provide potential to describe how organisms are morphologically constrained to climatic conditions. Allen's rule (relatively shorter…”
Get full text

Ontogeny of sex differences in the energetics and kinematics of terrestrial locomotion in leghorn chickens (Gallus gallus domesticus) by Rose, K. A., Bates, K. T., Nudds, R. L., Codd, J. R.

“…Sex differences in locomotor performance may precede the onset of sexual maturity and/or arise concomitantly with secondary sex characteristics. Here, we…”
Get full text

Size scaling and stiffness of avian primary feathers: implications for the flight of Mesozoic birds by WANG, X, NUDDS, R. L, PALMER, C, DYKE, G. J

“…The primary feathers of birds are subject to cyclical forces in flight causing their shafts (rachises) to bend. The amount the feathers deflect during flight…”
Get full text

Evidence for energy savings from aerial running in the Svalbard rock ptarmigan (Lagopus muta hyperborea) by Nudds, R. L., Folkow, L. P., Lees, J. J., Tickle, P. G., Stokkan, K.-A., Codd, J. R.

“…Svalbard rock ptarmigans were walked and run upon a treadmill and their energy expenditure measured using respirometry. The ptarmigan used three different…”
Get full text

Locomotory abilities and habitat of the Cretaceous bird Gansus yumenensis inferred from limb length proportions by Nudds, R. L., Atterholt, J., Wang, X., You, H.‐L., Dyke, G. J.

“…The relative length proportions of the three bony elements of the pelvic (femur, tibiotarsus and tarsometatarsus) and pectoral (humerus, ulna and manus) limbs…”
Get full text

The primary feather lengths of early birds with respect to avian wing shape evolution by WANG, X., NUDDS, R. L., DYKE, G. J.

“…We examine the relationships between primary feather length (fprim) and total arm length (ta) (sum of humerus, ulna and manus lengths) in Mesozoic fossil birds…”
Get full text

Maintaining the avian wing aerofoil: Relationships between the number of primary and secondary flight feathers and under‐lying skeletal size in birds by Deeming, D. C., Durkin, M., Nudds, R. L.

“…Bird wings vary in size and morphology in terms of both size and number of feathers and the underlying skeletal anatomy. The number of primary remiges does not…”
Get full text

Forelimb proportions and the evolutionary radiation of Neornithes by Nudds, R. L., Dyke, G. J., Rayner, J. M. V.

“…Analysis of a comprehensive dataset demonstrates that the brachial index (BI = humerus length/ulna length) of modern birds (Neornithes) varies significantly…”
Get full text

Exercise Training Lowers the Resting Metabolic Rate of Zebra Finches, Taeniopygia guttata by Nudds, R. L., Bryant, D. M.

“…1. Although changes in the mass and biochemistry of vertebrate locomotory muscle are established responses to exercise training, the effects of training on…”
Get full text

Kinematics and energetics of swimming performance during acute warming in brown trout Salmo trutta by Lea, J. M. D., Keen, A. N., Nudds, R. L., Shiels, H. A.

“…This study examined how acute warming of water temperature affects the mechanical efficiency of swimming and aerobic capabilities of the brown trout Salmo…”
Get full text

Scaling of body frontal area and body width in birds by Nudds, R.L., Rayner, J.M.V.

“…By analyzing a homogenous dataset we show, in contradiction to a previous study, that the scaling of body frontal area (Sb) with body mass (mb) does not differ…”
Get full text

Flying and swimming animals cruise at a Strouhal number tuned for high power efficiency by Taylor, Graham K, Nudds, Robert L, Thomas, Adrian L. R

“…Dimensionless numbers are important in biomechanics because their constancy can imply dynamic similarity between systems, despite possible differences in…”
Get full text

shape of pterosaur evolution: evidence from the fossil record by DYKE, G.J, MCGOWAN, A.J, NUDDS, R.L, SMITH, D

“…Although pterosaurs are a well-known lineage of Mesozoic flying reptiles, their fossil record and evolutionary dynamics have never been adequately quantified…”
Get full text

Energetics and kinematics of walking in the barnacle goose ( Branta leucopsis) by Nudds, R.L., Gardiner, J.D., Tickle, P.G., Codd, J.R.

“…Barnacle geese were walked on a treadmill at speeds ranging from 0.25 to 1.25 m s − 1 , which was their highest sustainable speed. No evidence for a gait…”
Get full text

Avian brachial index and wing kinematics: putting movement back into bones by Nudds, R.L, Dyke, G.J, Rayner, J.M.V

“…The relationship between wing kinematics, wing morphology and the brachial index of birds (BI=humerus length/ulna length) was examined. BI was found to differ…”
Get full text

Limb disparity and wing shape in pterosaurs by DYKE, G. J., NUDDS, R. L., RAYNER, J. M. V.

“…The limb proportions of the extinct flying pterosaurs were clearly distinct from their living counterparts, birds and bats. Within pterosaurs, however, we show…”
Get full text

The energetic cost of short flights in birds by Nudds, R L, Bryant, D M

“…Many small birds perform short flights, for which take-offs, ascents and descents form a large component of the total flight time and which are characterised…”
Get full text

A shortening of the manus precedes the attenuation of other wing-bone elements in the evolution of flightlessness in birds by Nudds, R. L., Davidson, J. Slove

“…Nudds, R. L. and Slove Davidson, J. 2010. A shortening of the manus precedes the attenuation of other wing‐bone elements in the evolution of flightlessness in…”
Get full text

Tuning of Strouhal number for high propulsive efficiency accurately predicts how wingbeat frequency and stroke amplitude relate and scale with size and flight speed in birds by Nudds, Robert L., Taylor, Graham K., Thomas, Adrian L. R.

“…is wingbeat frequency,…”
Get full text

Flight of Sharovipteryx mirabilis: the world's first delta‐winged glider by DYKE, G. J., NUDDS, R. L., RAYNER, J. M. V.

“…The 225 million‐year‐old reptile Sharovipteryx mirabilis was the world's first delta‐winged glider; this remarkable animal had a flight surface composed…”
Get full text