Hi,
I have a pullet doing this same thing. She did it back in may and just about died then. I have no idea how/why she pulled through since at one point she was flat on her side twitching. I have felt since then that she is very fragile and heat sensitive and even a little "off". Well yesterday she was acting drunk again and I had noticed her feathers drooping a bit the day before. It's been very hot here in VA again like it was before she did this last time. I put her in a crate in the basement with poultry nutri drench, food and bread and today she's a bit worse. I am wondering if this is a mold reaction? I don't see any mites or lice and do keep DE in their feed and in the coop and dust bath. We have 4 birds with clipped beaks and 5 without and they free range in a large fenced in area. My clipped beak chickens seem to always have mites which I'm always after, but not the birds with beaks. I give them an organic locally grown chicken feed and they waste a lot which I'm attributing to their clipped beaks. I am afraid there are little bits of mold on the ground and with her full beak, I'm worried she gets them (even though she has tons of room to get other stuff). I'm actually considering a feed switch for this girl. I'm going to do a search on aflatoxin. Please let me know how your roo is and what you have done for him! Thanks!