Researchers at BBC Earth , Canada , have shown that peacocks make infrasound noises - below 20 hertz - using their tails . Females were more alert when they heard the sound and males shrieked . Male peacocks may use infrasound to maintain their territory . They could also use the noise to attract a mate across scrubby woodland .
Researchers at the University of Manitoba , Canada , have shown that peacocks make infrasound noises - below 20 hertz - using their tails . Females were more alert when they heard the sound and males shrieked . Male peacocks may use infrasound to maintain their territory . They could also use the noise to attract a mate across scrubby woodland .