The crowing of the rooster can be traced back to a long time ago. In ancient times, people did not have alarm clocks. If you want to know the time, you rely on the rooster, because it crows on time every morning, very punctually, as if calling people to get up and work.
When they were young, many people would curiously ask their parents why the rooster crows every day. The family would say that the rooster is hungry and ask us to feed it. Until now, no one can tell why the rooster crows. So, why does it crow?
Some research has proved that rooster crowing is an instinctive nature, which has little to do with humans, because chickens in the wild state in nature also have the habit of crowing . From this point of view, rooster crowing is portrayed in the rooster. Skills in the bones.
Scientific experiment
In order to understand the reason why the rooster crows, some relevant scientists conducted an experiment. The roosters were divided into two groups, one group received normal lighting, one group provided lighting 24 hours a day, and artificial lighting was also used at night; the other group Use a dark environment, that is, a dark environment 24 hours a day.
The results found that under the same environment, the crowing pattern of the two groups of chickens did not change. It was concluded that the rooster's crowing is closely related to the biological clock, which is also an important reason why roosters also crow on cloudy days.
Rooster's perception of light
Scientists have found that , there is a substance called pineal gland between the rooster's brain and cerebellum. There are a large number of light-sensing cells in it. It secretes melatonin and can also It is keen to capture the changes in light. When the sun rises, it will be affected by the light. Melatonin will slowly stop secreting, and the rooster will be stimulated to wake up. After waking up, it will make a loud cry to announce the dawn.
Why do chickens crow at dawn?
This also has a lot to do with the physiological structure of the chicken's brain. Because chickens' vision is very poor in dim environments, they can hardly see anything at night. This is also the main reason why domestic chickens return to their nests at night. .
When the sun is about to appear, chickens are much more sensitive to light than humans . Before humans can feel the light, chickens have already had a premonition in advance. Since the sun rises at a relatively fixed time, the rooster will also Chills at fixed times as the sun rises.
Because the brain development of each chicken is different, the rise of the sun will also be different. However, chickens are neurotic animals. As long as one chicken in the village starts crowing, other chickens will croak accordingly.
Why doesn’t the hen crow?
This problem is easier to explain. In animals in nature, males generally pursue females. In order to show their advantages, males will use their own advantages to attract hens.
This also explains very well why roosters crow inexplicably at other times. They rely on the release process of male hormone to attract hens, and in this way they declare their territory.
The time when the rooster crows
In fact, the rooster crows not only at dawn. The rooster will crow three times from early morning to early morning. Some people must have heard the nursery rhyme "The rooster sings three times, and the flowers wake up and the birds are busy dressing up." This It implies that the chicken will crow three times. Because the chicken crows three times around one o'clock in the morning, the second time around 3 o'clock in the morning, and the third time around five o'clock. Since the first two crows are relatively short, plus People are in deep sleep, so few people will know.
Summary
In fact, , the rooster crows more to convey information. Whether it is a rooster or other animals, they have similar behaviors. For example, calves will run around very excitedly in the morning, magpies and sparrows will do so in the morning. It's called chattering.
Finally, have you ever raised a rooster? Do you like the crowing of roosters?
