I currently have six 2 yr old hens and eleven 12 week old chicks. A friend of a friend is giving away sixteen 11.5 week old chicks. They have roamed in a small enclosure with 15 other chicks (only 15x20). They have also been fed medicated feed. I was thinking of grabbing a few and free ranging them over 2 acres with my existing flock. They would also have to make the transition to organic feed whenever they need it. My question is, do I need to quarantine them from the flock because of the medicated feed or can I just go ahead and put them in the coop tonight?