... Respirometry Drag Bio-logging Transmitter Cost of transport Tagging Bio-telemetry and bio-logging devices (‘tags’) allow for direct measurements of movement and behavior in free-ranging animals. These technologies have been especially useful for the study of marine animals, which perform...

...Kennard P. Watson; Robert A. Granger ABSTRACT Wind tunnel tests were performed to measure the effect of a satellite transmitter on a juvenile green turtle ( Chelonia mydas ). A full-scale turtle model was constructed from an 11.5 kg specimen with a 48 cm carapace length, and a transmitter model...

... instrumented penguins. 18 5 1994 ©The Company of Biologists Limited 1994 penguin Pygoscelis papua Pygoscelis adeliae telemetry transmitter energy swimming hydrodynamics drag It is virtually impossible to follow most marine homeotherms at sea. Consequently, many recording...

...Holliday H. Obrecht, III; C. J. Pennycuick; Mark R. Fuller ABSTRACT The aerodynamic drag of bird bodies was measured in a wind tunnel, with and without back-mounted dummy radio transmitters. Flight performance estimates indicate that the drag of a large transmitter can cause a substantial reduction...