️<unk>️<unk>️<unk>️  ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Scientists have shown that peacocks shake their tails to make a noise that is too low for us to hear. Male birds may make the infrared rumble to scare off an approaching rival or to attract a mate.<unk> Male birds may make the infrared rumble to scare off an approaching rival or to attract a mate. Scientists have shown that peacocks shake their tails when displaying (stock image) to make a noise that is too low for us to hear. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Researchers at the University of Manitoba in Winnipeg, Canada, have shown that the birds make infrasound noises - below 20 hertz - using their tails and that other peacocks respond to them. Most humans hear sounds between 20 and 20,000 hertz.<unk> Most humans hear noises between 20 and 20,000 hertz. Dr James Hare noticed a peacock displaying and shaking its tail at a wall in a zoo, which he noted looked like a satellite dish and made him question whether the bird was listening to itself, reported BBC Earth. This sparked a study, leading him and graduate student Angela Freeman to record the sound of 46 peacocks shaking their feathers while displaying.<unk> This sparked a study, leading him and graduate student Angela Freeman to record the sound of 46 peacocks shaking their feathers while displaying. Male and female peacocks became more alert and moved around when the low noises were played back to them by researchers, with males (stock image) screaming out.<unk> Male and female peacocks became more alert and moved around when the low noises were played back to them by researchers, with males (stock image) shrieking out. Charles Darwin first suggested that a peacock's train serves to attract females and studies have since shown that females tend to prefer males with the most exaggerated male characteristics. Charles Darwin first suggested that a peacock's train serves to attract females and studies have since shown that females tend to prefer males with the most exaggerated male characteristics. Amotz Zahavi said the train indicates a male's fitness. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Handicap principle<unk> says that since males with particularly brightly colored or large plumes will attract the attention of predators, they must be extra fit to survive. Females are thought to choose mates with good genes, so males with more exaggerated sexual characteristics, such as a big train, tend to have better...
Researchers at the University of Manitoba, Canada, have shown that peacocks make infrasound noises - below 20 hertz - using their tails. <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> Male peacocks may use infrasound to maintain their territory.<unk> Male peacocks may use infrasound to maintain their territory. <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk>