The Veloci-Raptor: A bicycle-powered model raptor for realistic predator encounter experiments

Raptor attacks in the wild can be difficult to observe and impossible to ma nipulate in a repeatable manner. We have developed a bicycle-driven model r aptor ("Veloci-Raptor") to test prey responses to raptor attacks. Previous researchers have used wind-up toy birds or gravity-driven model raptors, wh ich typically have low maximum velocities and often require cumbersome equi pment. Our method's combination of portability, flexibility, and high maxim um speed (19.4 m/s) make it superior to previous methods in many field situ ations.