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Keywords: paddling
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Journal Articles
J Exp Biol (2018) 221 (19): jeb168831.
Published: 11 October 2018
... prowess of loons, their undomesticated nature has prevented prior quantitative analysis. Our study used high-speed underwater cameras to film healthy common loons ( Gavia immer ) at the Tufts Wildlife Clinic in order to analyze their swimming and turning strategies. Loons swim by synchronously paddling...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (13): 2283–2291.
Published: 1 July 2011
...Daegyoum Kim; Morteza Gharib SUMMARY Several characteristics of drag-based paddling propulsion are studied with a simple mechanical model and a measurement technique for mapping three-dimensional flow fields. In drag-based propulsion, the temporal change of the vortex strength is an important...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2005) 208 (20): 3835–3849.
Published: 15 October 2005
...Gal Ribak; Daniel Weihs; Zeev Arad SUMMARY Cormorants are water birds that forage by submerged swimming in search and pursuit of fish. Underwater they swim by paddling with both feet simultaneously in a gait that includes long glides between consecutive strokes. At shallow swimming depths the birds...
Journal Articles
J Exp Biol (2004) 207 (22): 3945–3958.
Published: 15 October 2004
... powerful synchronous kicks (maximum thrust calculated was 264 mN foot –1 ). An alternative mechanism of force production could be the lift-based paddling recently suggested for delta-shaped feet of swimming birds. However, the orientation of the vortex rings generated by the feet is almost perpendicular...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2001) 204 (10): 1687–1696.
Published: 15 May 2001
... that the lift-based paddling of grebes considerably increases both maximum swimming speed and energetic efficiency over drag-based propulsion. Furthermore, the results implicate a new interpretation of the functional morphology of these birds, with the toes serving as a self-stabilizing multi-slotted hydrofoil...