Is it possible to determine the difference at birth? We got 10 ameraucana eggs and 16 olive egger hatching eggs. Problem is they're all in the same incubator. So is there a way to determine which are which after they hatch or will we have to wait til they feather out? We have limited space and won't be able to keep them all, we will be re-homing the rest. I believe the olive eggers are blue ameraucana x french black copper maran (F1). And then the breeder kept breeding the olive eggers back to olive eggers. (F1xF1).