article_snippet.sent: Examples include the fans of peacocks, the tall crests of roosters or the long tail feathers of some birds of paradise, which are used to attract and court mates.
article_snippet.sent: Scientists have recently shown that peacocks shake peacocks tails to make a noise that is too low for us to hear.
article_snippet.sent: Scientists have shown that peacocks (stock image) shake Scientists tails to make a noise that is too low for us to hear .
article_snippet.sent: Scientists have shown that peacocks shake peacocks tails to make a noise that is too low for us to hear.
article_snippet.sent: Male birds may make the infrared rumble to scare off an approaching rival or to attract a mate.
article_snippet.sent: Researchers at the University of Manitoba in Winnipeg, Canada, have shown that the birds make infrasound noises - below 20 hertz - using the birds tails and that other peacocks respond to the birds.
article_snippet.sent: Humans hear a rustling sound when this happens, but the experts found that the birds hear a loud sound of between 70 and 108 decibels, according to the study published in the journal Animal Behaviour.
article_snippet.sent: Male and female peacocks became more alert and moved around when the low noises were played back to Male and female peacocks by researchers, with males shrieking out in response.
article_snippet.sent: Experts are unsure how the birds detect infrasound, but know that some can feel vibration through Experts legs.
article_snippet.sent: Graduate student Angela Freeman observed that male peacocks were most likely to make the low sounds when male peacocks showed off male peacocks train feathers, producing two displays which Graduate student Angela Freeman called the ‘shiver train’ and the ‘pulse train’.
article_snippet.sent: Peacocks’ tails are a sign of strength and good genes, so a strong noise may reinforce a message of virility, Graduate student Angela Freeman said.
article_snippet.sent: This could be especially useful as the birds live in scrubby woodland, where high noises can only travel over short distances and birds sometimes can’t see each other.
article_snippet.sent: We think that possibly these signals could signal to females and males who are out of sight behind a bush or over the hill,’ she added.