I have 5 mixed breed chicks which are in a 10 x 15 foot (about) coop with a small run attached. The coop is within a tin-barn and its insulated with straw bales and a big glass window. I think 3 are roosters which I'm going to probably have to get rid of. I want laying hens. Someone in the next town has a bunch of 1 month old barred rock chicks. I really like the looks of the barred rocks. I live in Western NY and its getting cold. The chicks would probably need chicken starter and I have the older chicks now on protein enriched growth feed. Is it a good idea to mix the two batches? Is the feed a big problem? The roosters will have to wait for the holidays for slaughter. And the weather now is colder. I have some lights and a warming light in the coop for them. Any comments or suggestions would help. My goal is about 6 laying hens and perhaps one rooster.