Other peacocks hear it though, Angela Freeman reported June 13 at the annual meeting of the Animal Behavior Society. When she played recordings of the newly discovered sound to peafowl, females looked alert and males were likely to shriek out a (human-audible) call. Peacocks are thus the first birds known to make and perceive noises below human hearing, Freeman said.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.