I have an 8 wk old Amerucana chick that had been doing well until 2 or 3 days ago. She was fluffed out and droopy. I have seen her at the food dish but not eating much, same with water. She has now dropped a lot of weight. Her crop is soft and squishy. I thought maybe sour crop? Tried to get her to regurg with no luck. Haven't observed her poop yet. Her butt feathers are dirty, appears she has not been cleaning them. And now her wings are droopy. Any thoughts?