Hi.  I have two chickens I want to introduce to the flock.  I have raised them from 1 week in a brooder and they are now about 6 weeks old, about a month and a half younger than the others.  I plan on putting the two inside the run in their own “look but don’t touch” area.  My question is how long should I keep them in there?  They r about half the size of the others but fully feathered.