I am adding new chicks to my existing flock of 6. I have 6 one year old Columbian Rock Cross hens, they are in 1 coop / run. I also have 7 Marans (7 weeks old) in another coop and run. I have 2 Golden Commets that are 3 weeks old and 8 Easter Eggers 2 weeks old. These 10 are together in my shed. I will be getting 3 brand new Buff Orps this week. I am hopng I will be able to add the 3 Orps in with the Golden Comets and the Easter Eggers. Does anyone know when I should be able to add these 13 chicks in with the Marans?