The rule governs the sequence of crowing

For the first time in the history of research, scientists have discovered the order of crowing in the morning is closely related to the social level of this species.

There is a rule governing the order of crow's cock every morning

Accordingly, the research team from the Institute of Molecular Biotransformation (ITbM) at Nagoya University (Japan) found a rule in the sequence of crowing of chickens . Although the lower-level roosters are also capable of crowing, they still have to accept waiting every morning, giving the most prominent rooster before him.

In 2013, Tsuyoshi Shimmura and Takashi Yoshimura of Nagoya University had a Current Biology report, stating that the crowing of the rooster was dominated by their internal biological clocks . Beginning by the crowing of a special rooster, the others in the nearby range also started to nape, like a chain reaction. The crowing is considered a rooster's action to warn others about the territory.

In addition, chickens are known to be highly social animals and develop a dominant hierarchy, also known as social order when it lives in groups. This order begins with the operation of all the chickens in the dominant one-herd flock, the second dominant chicken pecks all the remaining chickens and the process continues. The social decentralization of roosters is strongly reflected in the group activities, when the highest ranked rooster is often given priority in eating and mating.

Professor Takashi Yoshimura - the lead author of the study.

This is the first time that Shimmura and Yoshimura have discovered the priority order of crowing in chickens based on this social ranking. Through observing a group of 4 roosters, Shimmura - currently an assistant professor at the National Institute of Biological Foundations in Japan, the highest ranked rooster in the herd is the first crow every morning . The crowing is then played by the second, third and fourth drum chickens on the social hierarchy.

Besides, the start time of the dominant chicken can change from day to day, however the crowing of other chickens always starts right after the crowing of the highest ranked rooster. . After eliminating the rooster with the highest rank in the group, the rooster in the second place becomes the first one to nape. " We have discovered roosters living in a correct hierarchy, where social rankings reflect the order of dawn at dawn," said Yoshimura, head of research and principal researcher at ITbM. to speak.