it is about that size i also have 4 other chicks that are about 2 weeks younger and its getting a little bit crowded. can the 2 bigger chicks be taken from under the heat lampIf you are keeping them in a cage I hope it is very roomy - at LEAST 4x4. That's what my friend used. She kept the chicks and momma in the 4x4 roofed dog kennel in the adult run (roof to keep jumping adults from pooping on the chicks below) - momma and 5 chicks in the kennel and a small log branch to use as a perch, a covered storage box or litter box for a nest, and of course water and food. It got crowded after a month so 3 cockerels were given away and left momma with 2 pullet chicks. Momma didn't need to be with the chicks any more and was released into the big pen. The 2 chicks stayed in the kennel cage until they were 4-1/2 months old and nearly full sized before their kennel door was opened to go in and out as they needed to mingle with the adults. There was the usual pecking order chasing but no serious fights or injuries as the juvies had learned during their cage time to be respectful of the adults. It's good for the juvies and adults to be equal in size otherwise smaller/younger birds get throttled.