Fine-scale changes in speed and altitude suggest protean movements in homing pigeon flights

Baptiste Garde, Rory Wilson, Emmanouil Lempidakis, Luca Börger, Steven Portugal, Anders Hedenström, Giacomo Dell'Omo, Michael Quetting, Martin Wikelski & Emily L. C. Shepard
The power curve provides a basis for predicting adjustments that animals make in flight speed, for example in relation to wind, distance, habitat foraging quality and objective. However, relatively few studies have examined how animals respond to the landscape below them, which could affect speed and power allocation through modifications in climb rate and perceived predation risk. We equipped homing pigeons (Columba livia) with high-frequency loggers to examine how flight speed, and hence effort, varies...
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