Crows attract mates like people

Instead of shouting, showing fur or body size like other birds, crows use quarries, mosses or branches to attract their partners, similar to the way people hold, hold or point an item. objects to attract the attention of others.

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The conclusion comes after two Dr. Simone Pika at the Oratory at Seewiesen (Germany) and Thomas Bugnyar at the University of Vienna (Austria) observed 7 pairs of ravens in 2 years.

The results showed that they used to mine, hold gravel, branches and mosses to 'show off' and 'invite' each other, to attract the attention of the enemy. In particular, they only do this when they know that the opposite sex is observing themselves and the objects they 'invite' their partners are not food.

Previously, the way of communicating by pointing or holding objects is considered to be the typical form of high-level mammals, is the first and most basic language development of mankind.

Children who do not know how to use the above method to attract the attention of adults. Large apes also learn to use this way of communication, but only when interacting with their caregivers in the zoo, such as scratching to point to areas of the body hair need to be scratched.

Many studies of the structure of the crow's brain show that their intelligence index is more than gibbon. However, it is also possible that simply because there is no advantage of the noise or the fur like other species, the high amount of hormone in the body stimulates them to do so to attract their partners.