I'm getting some new chicks in a month and I'm planning on housing them in the coop(12'X12') where I currently have only three laying hens. I plan to clean it out good and everything before they come. However the question is, where to put the layers who's home I'm stealing? Well, I'm thinking of building them a nice little coop of their own. That said, I don't want, nor do I have the room to build a whole new pen too. I know they can't be housed together. But can I just put the new coop(doghouse sized) into my current chicken pen? I'll keep the pen door on the old coop shut.. Is that too close?