ok, i have a question, i have 7 hens about 3 years old,( i did have 17 and my sons dog killed 9 and a opossum ran off with 1) I plan to get some new baby chicks, i will wean them in the house in a seperate cage, but when they are ready to go to the coop, will i have trouble intergrating them with the older hens. Do i need to build a seperate coop and run for the new girls. Thanks