thanks everyone for the info, also I have never had a new chicken about 19 weeks old lay rubber eggs about 3 of them, the other two 19 weeks old are laying hard eggs, I have layer feed and oyster shell, out
so I'm keeping them in the run longer before letting them out in the back yard so they eat more the feed. I think they are the isa browns that are not in full swing yet and the new blue sapphires have it down and lay hard shells and huge eggs, they are 19 weeks today, I have 5 older hens well summers that are 7 years old this year and 3 americanas that are 4 years old this year, everyone intergrated great now they are one flock,