So we are raising our first little chickie babies. All 6 were purchased at Tractor Supply at 3 days old, in mid March. That puts them at almost 11 weeks now. Someone locally is selling two 4 month old hens that I'd like to get (different breeds than what we have, what can I say I like variety lol) but I am having trouble figuring out the logistics of the whole "quarantine" and "introduce slowly" thing. We have one coop, and one run. I think we could pretty easily fence off part of the run to allow them separate spaces for a couple weeks while they slowly acclimate, but I don't know what to do at night? We still have our brooder box in the garage, but I am worried that 4 month old chickens will be too big (mostly too tall) for it. I don't want to stress them out any more than they will probably already be! I know my girls have the home court advantage, but the 2 new girls would be older, so maybe that balances out? I'd love advice, opinions, or your personal experiences with something like this.