Hello everyone. I'm new to this particular thread -as we just got our very first Orpingtons a few months ago. I purchased from a very reputable breeder, but for some reason, all 3 of my blues have not done well. Two died, and one is on her way out now. I have NO IDEA what is going on with them. All 3 have been female. I also got black and lavender pullets and cockerels and a blue cockerel from the same breeder and they are THRIVING. Very large. Very healthy. But the blue females have all stayed very small for some reason. The first one just dropped dead. We were completely shocked to find her one day. A few weeks later, we noticed the next one was not acting right. Then she became lame. I researched online and thought it might be Cocci, so I treated with Corid, but she still died. The gentleman that tests my birds didn't think it was Cocci because she never had a pasty butt and he said the Corid would have worked. Now, a month later, our last little blue lady has her feathers all poofed out and tail turned downwards. She's losing weight fast. We treated again with Corid, but she isn't getting well! I dusted every bird and cleaned the coops really well. She always has access to fresh food and clean fresh water. All other birds in the coop are perfectly fine. I'm beginning to wonder if it might be a genetic issue with Orpington blue females in particular. I've been raising various breeds of birds for five years now and have never had any get sick except these. Any thoughts or ideas on what it might be or what I can do to treat her? Thanks!