What came first... the chicken or the egg

At our home, the chickens came first. We usually buy chickens a few months old, but when the opportunity to get Araucana chicks (they lay blue/green eggs) we quickly added 9 to our family. As of late March we have 7 healthy teenage hens who joined the veterans hens and duck in the group. We have 4 hens laying an egg each every day. Each hen lays a slightly different egg, one hen even lays double yolk eggs.