We lost our original flock of 3 hens, perfectly healthy, to a fox the other evening. So I went back to the place I purchased these from and bought 4 more hens. about 6 days ago. Now two of them have bubbly eyes and have the terrible respiratory rattle going on. I have separated them from the other two. I am going to go to our local feed store to see what medications they have. Also, how does one find out where to bring a sick bird to be tested (and if those tests might be free as they are in some states). We are in Maryland. I am not opposed to culling if that is the best route for them and us. We do have three barred rock pullets but i have them free ranging and then sleeping in a separate coop. Any advice would be greatly appreciated.