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Study finds reason why roosters crow in the morning
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The circadian clock is the reason why a rooster crows every morning. (Shutterstock/File)
Ever wondered why roosters always crow “cock-a-doodle-doo” at daybreak?
A research published in the Current Biology journal in 2013 by Tsuyoshi Shimmura and Takashi Yoshimura of Nagoya University in Japan, found that the crowing is mainly regulated by the internal timekeeper (circadian clock) although it is influenced by external stimuli, such as light or other roosters’ crowing.
Read also: Why you should drink lemon water every morning
According to livescience.com, the researchers placed 40 roosters in a room, which had constant light, and then recorded their crowing simultaneously.
The result showed that the roosters would crow at dawn and, although they also crowed at other times of the day under influence of the sound of other chickens’ crowing and light, their circadian clock still dominated the behavior and their crowing sounded stronger in the morning.
The team is interested in examining other animal sounds as well. (wir/asw)
