Birds can tell who is dangerous

The study results showed that: Crows crowed (with gray hairs at the nape) will fly back to the nest twice as fast when the danger is known in the second.

More specifically, researchers from the University of Exeter suggest that this highly social (living in flock) bird is capable of remembering someone if they approach their nest again.

In this study, an unknown man approached the nest of the crows of the crows , at the same time, the scientists issued a recording of the warning call and the call for interaction between the bird and the bird. together.

The crows of the crows have learned to recognize dangers without having to go through the worst before.

The results showed that, the next time he saw the previous man, the crows of the gray crow heard the warning call and had a defensive attitude and immediately flew back to its nest at twice the speed. times the average flight speed of this bird. Meanwhile, the birds that heard the usual interaction call (without warning) still flew back to their nests but took longer - 63% more time than the birds that didn't hear any words. come on. The research was published in the prestigious scientific journal ' Royal Society Open Science'.

'One of the biggest challenges for many animals is how to live together with humans. People can give many benefits such as providing food for them but in many cases, people are also a threat, 'said the author of the study and a PhD from Exeter University. , said Victoria Lee.

'The ability to differentiate between dangerous and harmless people is an advantage to them. And here, we see the gray-necked crow learned to know the dangers without having to go through the bad things before, 'the female doctor shared.

The crows of the crows are the smallest member of the crows family, characterized by a slight gray mark on the neck and pale iris.

They are known to be deeply connected birds, and will accompany each other for life, even when they cannot have children for years.

Besides, these highly social creatures eat and sleep together, and even encourage others to fly with them when they find an abundant food source.

Scientists have commented on their research that: 'The study provides important evidence that animals use the method of learning and absorbing from their surroundings to be able to analyze. the level of danger that humans bring , ' and' provides a fresh perspective on how cognitive ability can affect the animal's ability to adapt to the environment '.