(CNN) - Researchers say the first chicken to cross the road likely did so in Southeast Asia. They’re still not sure why.
A new study indicates where the modern, domesticated chicken first appeared.
The study, published in the journal Cell Research, reports modern chickens descended primarily from ancient fowl in a specific region, which includes what is now Myanmar, Laos, Thailand and southwestern China.
There are about 23 billion chickens now, making them the most common bird on Earth.
Scientists say studying the evolutionary history of how chickens became domesticated brings a better understanding of human history.
Researchers also have not yet answered which came first, the chicken or the egg.