Pendulous crop I don't think is very treatable, at least not according to the link Casportpony posted above. It could well be the problem, after seeing the pictures.It's squishy, almost like it's filled with fluid. If this is a breast blister how should I treat it? If it's pendulous crop does that mean it's untreatable? In other words should I slaughter her?
Do you feel any grain, or feed in there or is it more liquidy? If it is a breast blister, they say to lance and treat it. I never did that with my birds, honestly. Let me find you a link, because these two issues in turkeys present themselves very similarily.