Who born first hen or egg?

This is a classic philosophical riddle! Here's the breakdown:

* The Simple Answer: The egg came first. Chickens evolved from a species of bird that laid eggs. So, before there were chickens, there were eggs laid by their ancestors.

* The Complicated Answer: It depends on what you mean by "hen" and "egg." If you're asking which came first, a chicken egg that hatches into a chicken, or a chicken, then the answer is the egg. However, the egg that hatched into the first chicken wasn't laid by a chicken, but by its ancestor.

So, the egg came first in the evolutionary sense, but the first chicken hatched from an egg laid by its non-chicken ancestor.