Hi there, I have a mixed flock birds. In my main coop is 6 RIR (19 weeks)pullets, and good size already. lol My hen batnam is 1 year and her babies( 18 weeks) pullet and a roo (don't want to leave out my 2 bad silkie roo's in there own little "I have been a bad boy time out coop") Well my daughter 16 year old brought home two 6 week very hungry and not very well cared for "black giant " is the breed the guy said. I was not ready for younger babies. I only buy 9 weeks or older. I had to think of something soooooo In my barn I had an old big parrot cage. I put wood on top of the wire bottom and shavings gave them a little roost and set it inside the coop. I turned the light on so they would be warm, and so my flock wouldn't kick there butt. I moved that cage into the run today. My flock is checking them out. and my little roo seems to be baysitting. How long should I keep up this routine? Any other ideas would be great. Thanks Ann Oh the babys are little girls.