I ordered a dozen "replacement" chicks (only lost five, 12 was the minimum order) and was told they wont be available for a few weeks. Good, gives the older chicks time to go outside. My phone rings today. Babies will be here tomorrow. I have two brooders with 14 chicks a piece. One heater, two lamps. My current set will be 9 days old when these arrive. I have nowhere to put another brooder if i even had one. These are taking up most of my bedroom as is. How dangerous is it to put day old chicks with 9 day old chicks? Should i crowd 28 chicks in the same brooder to give the 12 their own, or can i split the new brood in half with the older chicks, as long as i keep a close eye on them?