I'm getting chicks from a neighbor who had a suprise setting of eggs. Hes new to chickens and hadn't noticed the hen setting. The hatch is staggered and i'm concerned about chicks of different ages and the older picking at the younger. I have no experience with a staggered hatch. I have already recieved 2 and they are 2 days old there are 7 eggs left to hatch. How long should i except the chicks before there will be a problem putting them in with the first ones? I don't want a lot of chicks in different brooders it being winter.