Mountain Goat wrote:
I just tried to find some on the internet and they only show common breeds of chicken.
Like any other domestic animal chickens are derived from recent wild ancestors.
Dogs came from wolves, cats from north african wild cats. Chickens came from still extant southeast Asian jungle fowl. Small jungle pheasants that are still around crowing in the morning in the wild- much like the domestic ones great the morning in the barnyard. These in turn evolved in the wild from other ancestors - from other egg laying birds over millions of years.
The linneage goes back to the common ancestor of all birds - a small tree dwelling carnivorious dinosaur. A tiny T-rex of the trees. This critter also hatched from eggs.
It evolved from other ground bound dinosaurs...which evolved from the common ancestors of all dinosaurs...which evolved from the very first reptile. Maybe 300 million years ago.This was the first critter to lay a modern type "egg" that both birds and reptiles lay (as opposed to rudimentary eggs that fish and amphibians lay -that have to be layed in water) that enables the babies to go through the "tadpole stage" while getting nutrition and protection on land.
In conclusion: the domestic chicken is only a few thousand years old. But "the egg" is around 300 million years old.
Ergo....the egg came first!