My beloved hen Daisy is not her normal self. She is very docile, sluggish and she is keeping to herself. I thought she might've been egg bound, but I felt her and tried to massage the egg out, and nothing came out. She's been this way for a couple of days, but I thought she'd be feeling better even if she was egg bound, because she'd lay the egg. Today, I was getting really worried about her and I felt her crop. It feels oversized and squishy, almost like it's full of air. I kept an eye on her and she's eating, drinking and poos normally. What could be wrong with my girl? Any advice is appriciated. Thanks!