For many years, the rooster has been the alarm clock for people, especially peasants, and they usually crow at 5:00 a.m. This is because roosters have an internal biological clock that is responsible for notifying them when they must sing. The first to crow is the king rooster and then the second and so on.
The University of Nagoya, in Japan, was in charge of carrying out the study to determine the aforementioned, likewise, the greater rooster makes its position and sexuality felt with its song. In addition, they are territorial birds that like to make their power known through their clucking and in this way they seduce the chickens.
Even the roosters not only sing at dawn, they also do it between 11:00 am and 12:00 pm and do it again at 6:00 pm as a synonym that the day is over. This is why in past times people used the sound of the rooster as a clock, they knew that every time it sang it was to get up, have lunch or go to sleep.
How does the crowing of the rooster occur?
Roosters can crow thanks to the vocal organ the syrinx, which allows us humans to speak and that other birds also have, with this they can emit their natural sound and others to communicate, the strength depends on the strength with which they let pass the air
It should be noted that hens do not have the need to cluck and neither do castrated roosters, since the fact of being castrated has no reason to demonstrate their sexuality through singing.
