Did the Chicken or the Egg Came First?

Eggs come from chickens and chickens come from eggs: that's the basis of this ancient riddle. But eggs – which are just female sex cells – evolved more than a billion years ago, whereas chickens have been around for just 10,000 years.

Which existed first chicken or egg?

But it doesn't matter; at some point in evolutionary history when there were no chickens, two birds that were almost-but-not-quite chickens mated and laid an egg that hatched into the first chicken. If you are prepared to call that egg a chicken's egg, then the egg came first.

What two birds created the chicken?

Scientists believe the red jungle fowl, Gallus gallus, is the most likely progenitor of the modern chicken, although research suggests that the domestic chicken's yellow skin is a trait inherited from the gray jungle fowl, Gallus sonneratii. So, it's more than likely that today's chicken has multiple ancestors.