Robotic Lizards Help Prove Long-standing Signaling Theory

Like teachers who rap a ruler before announcing homework in noisy classrooms, Puerto Rican anole lizards perform eye-catching pushups before beginning head-bobbing displays that advertise their territory and status, according to a new study. The study is the first to show that animals in noisy environments can use visual displays to grab their neighbors' attention before initiating a more information-rich performance.

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