We have been dealing with our hen's sour crop (secondary infection), now impacted crop. Seems to be full of small rocks and other debris. We have tried everything over the last month to help her. Vet is recommending surgery or putting her down. We need to decide by today. He says her crop has been so distended that it's normal functioning may never return, even after surgery and especially if she is put back into the same environment (free ranging where there are rocks, etc...). Is this true? I don't know what to do. She is only a year old, otherwise healthy. What is the success rate for these types of things and will her crop return to normal functioning? Thank you.