I have had chickens for 20 years! My family has always had them for meat and eggs. We have mainly had heritage breeds. I decided in August I was going to start raising and breeding poultry. I have Orpington's, silkies, Polish, Wyandotte's, Cochins, Seabrights and ameruacana. I have lost 10% or more of my flock on regular basis. It seems there is always something going wrong. I bought vaccines hoping that would change my luck but that hasn't seemed to help either. Like today some how my babies, who are in my heated garage got lice, my WCB Polish suddenly is unable to stand, I found an orpington hen lathargic laying on the ground out side, and a cochin w a swollen eye. In the last week I have had 3 birds die all in different areas (cooped seperate) and had to cull 1. As stated above I have chickens for quit awhile and never had any of the issues I have had. Am I doing something wrong or is this just part of running a poultry business?