Yes you absolutely should quarantine. After about 4 weeks if no visible problems then if you have enough room you can place the hens with a few of your resident flock to see if they get sick, that way if they are carriers you won't cause your entire flock to get sick. If after a couple of...
My wife and I along with our 2 sons 7 and 12 started our backyard flock this year. I had chickens as a kid but haven't any since. We currenlty live in the country with 8 horses, 1 dog and 31 chickens. All chickens are 3.5 months old. Black Copper and Wheaton Marans, Ameraucanas and Light...