I have a hen that has been my favorite one, she's just so friendly. I'm having a problem with her I don't know what's wrong. About 3 days ago she started staying away from the others, but when they move she would move with them but very slowly and way behind. When she stops she kinda balls up and just stands in one spot. I've thought about her being egg bound or her craw was packed. But I have 10 hens and 2 days ago I got 10 eggs. Any ideas anyone?