I have a small flock of chickens, one rooster, with four hens, OOOPPPPSS! I mean one rooster with three hens and a late developing roo, who just started crowing yesterday. They are between 20 and 24 weeks. I would like to add to the flock and separate my two roos. I know that I need 8-10 hens per roo, but, I can't afford to add hens of the same age. I found 5 pullet chicks about 7 weeks old that I thought about purchasing, and quarantining for a minimum of 4 weeks, probably longer because of the size difference. My concern is Coccidosis, if these new birds have it and have recovered from it, I have read that it goes dormant and can be "reactivated" with the stress of a move and such. So, my fear is even adding to my flock! I know that many of you do this, but I have healthy birds right now! Just not enough girls for my boys. This lady said she got the chicks from McMurray. Any advice or suggestions?