it wouldn't let me upload the video I have to show what's going on with my pullet but I'll do the best I can to describe it. I have lost two previous pullets out of the same batch. They are four months old and still in their grow out pen which they are running out of room due to being on quarantine. I lost the first pullet maybe three weeks ago and another maybe a week ago. I treated them with corrid powdered as instructed and still lost both. Now a third pullet is sick. It started with the puffed up feathers head sunk in. (Yesterday) so I started back using corrid. Today I let them out of their coop and I notice her head was wobbling and she went to fly and fell over... crossing her feet as she walks. Almost like she's dizzy! The other three members seem fine as of right now. I check their food every day to make sure there is no wet food, I change their water every day with fresh water and corrid. I make sure bedding is clean and dry. So I did a bunch of research on www.poultrydvm.com and found the symptoms they have are either new castle, coccious (if spelled right), and a long list of everything else under the sun. Does anyone have any ideas on what this is? How to treat it? And is it okay to let them be with h the big flock? I need some serious help on what to do! Thank you!