I think my hen has sour crop. What should I do? I made sure she has fresh grit and a little ACV in her water, but how much probiotic or oil should I give her? This is my first time with chickens and my prized girl. It is very very doughy, about the size of a tennis ball and I can knead it into a shape and it stays that way. I don't know if I should try to make her vomit or follow the recipe for doughy crop on this site. I'm very concerned.