Democrats are the ones who make voices before making decisions

Scientists have discovered that a species of crow, the Jacques, collectively "votes" democratically before leaving its place. In the winter mornings, thousands of jackdaws fly together in the sky and become a kind of spinning black sheet. Scientists have now discovered that before flying, these birds make noises and tell when they want to fly. When their noise reaches a certain level, it indicates that they are ready to go now, and with it the birds set out on their journey. Alex Thornton, a professor of cognitive evolution at the University of Exeter, told BBC News that this is a very interesting revelation about birds making decisions. "When the bird makes a noise, it is voting or signaling that it wants to go," he said. The first is the volume of noise and the second is how loud that noise goes or how fast the noise increases. When the birds agree, on average, thousands of birds fly from the trees in five seconds, a beautiful sight seen in the UK in winter. Scientists say that when the noise is loud, the flock of birds also leaves quickly. A flock of 40,000 jackdaws has been spotted flying together in Norfolk.
Rufer Thornton says jackdaws want to fly together in trees because it protects them from other birds of prey or is useful for "information exchange". "If you are flying together, you may know that the other bird has eaten well, or you can tell by their voices what they have eaten," says Professor Thornton. You may also realize that following this bird will be beneficial for a good place to eat.
To observe rhinoceros habits, scientists spent the winter for two years installing sound-recording devices on the trees in Cornwall where the jackdaws lived. Scientists led by Masters student Alex Dabnah analyzed the sounds and compared them to the noise made by birds as they left the tree. To test their findings, the scientists shared the recordings with Jacques, who was sitting on a tree, and saw that the herd reacted to the sounds and flew six minutes earlier than average. Birds do not fly when wind noise is heard instead, which indicates that jackdaws respond to specific sounds, not to any noise at all. Professor Thornton says other birds may have a similar reaction, but scientists have not yet studied it in detail. He says the results will help scientists understand how human actions affect animal populations. Humans continue to be a nuisance to birds by increasing light and noise pollution, which may affect the ability of animals to communicate with each other. "Think of a bird's nest near a city or a busy highway," says Professor Thornton. If the birds can't hear each other and can't agree on when to fly together, it could have a huge impact on their population. " The research is published in the journal Current Biology. https:// www.bbc.com/urdu/ science-61569139 Georgina Renard BBC News

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