OK, tell me how to do this. I have 25 4-week old babies in a chickville....wired off area so that can come and go as they please but can get away from my 4 big hens in case they start to peck. I have 5 2-week old babies in a warmer. Today a new baby hatched and I'm expecting 2 or 3 more in the next couple of days. SO, I'm thinking I'll have to do some moving. Maybe move the 2 weekers to a pet carrier inside chickville so I can put the new babies in the warmer. I can put the carrier so that it is near the warming lamp for warmth at night (I can't believe its gonna be 50 at night in July in WI!) and yet the 4 weekers can get to the warmth too. My big hens occasionally chase the 4 weekers so I'm thinking its a good idea to still keep them in chickville? From now on I do hatches 4 weeks apart.
Best bet is to keep them separated from the big chicks till they're at least 8 weeks old... thats when I introduced mine. Just watching them is the best, and giving lots of space and lots of food so there is nothing to fight about!