Thank you for the info. So should I treat the older hens who have been in the yard for over a year with no medication and no disease? I can put the Corid in their water just in case but I'd rather not medicate if it is not necessary.
Thanks again for the reply!
We purchased three 2 week old Dominique chicks. They were perfectly happy and healthy. About a week ago at age 6 weeks we took them outside for the daytime so they could play. They have been out daily since then. Outside we have 7 RIR/Delaware cross hens that are 1 year old. They also are...