I have three BR and two EE pullets that will be a year old at the end of this month. My daughter wanted a few silkie chicks of her own and we have finally found a farm with some week old, assorted colors and hope to pick up four on Friday. I spoke to the owner of the farm and asked what she was feeding the chicks. She said medicated feed, which was good since I planned to feed the new chicks the medicated feed for six months (as I did with my current flock) as well as Braggs ACV in their water. During the conversation, she mentioned that she's "had coccidia" in the past but very healthy chicks this year. Now I'm a little concerned or maybe I shouldn't be and this is just something chicken owners have to contend with. I planned on keeping the new chicks completely separate from my flock for at least six weeks and assuming they are on the medicated feed containing amprolium and I practice the correct bio security (always tending to them AFTER my main flock), will everyone be OK? At some point I would give the chicks some clumps of grass/dirt from the yard to introduce current germs to them. I wasn't planning on completely integrating the two flocks until end of July/early August anyway but hoped they could be in the coop/run separated by hard cloth some time after quarantine. Any advice is appreciated, thank you.