I have a red-laced Wynadotte that is just not herself. She stopped laying a few days ago. She was always the first out of the coop and the first to run up to you when you stepped out the door. Over the couple days I noticed that she is hanging back. She eats fresh food I put out, but isn't eating the feed. She is also drinking ALOT! I think she might be a little congested too. She follows the rest of the flock when they are free ranging. Everyone else seems fine. Not sure what I should do for her. She is a wonderful girl, and I would hate to loose her. Any thoughts?