4 days ago I noticed 1 of my pullets wasn't eating right. She was pecking the air about 4 inches above the feed pan. I immediately quarantined her and started her on some oxiterracycline (sp?). I took her out this morning to see how she's doing. Yes I've been getting her out every day just haven't taken her outside. She immediately eliminated wateryclearish white. Then ttried to eat out of the pan and started pecking the air again. In her kennel she has food and water and doesn't have to move very far for it. I put her back into her bed after cleaning it out really well, and putting fresh bedding in. She's been extremely quiet inside but was calling up a storm while she was outside and could hear my other 2 girls. What else can I do to help her? Also what could have caused this?