All the eggs were the same size. It might be just that they're in with chubby/fluffy EEs and favorelles. I'm excited and hoping for girls on the CCLx.Yes cuckoos can be sexed. Sounds like 2 pullets and a roo. Odd they are smaller. Same chickens for all the eggs...... OH maybe not. I think I had 2 pullets in that pen. 1 was the exchequer cross and the other is a leghorn..... oh I can't rememberSo the 2 black came from the exchequer cross for sure. She maybe younger... were the eggs smaller? They will catch up.