A few days ago, I noticed that one of my broody hens had a large mass right where its neck and body joined. I was really scared and thought it was a tumor, but after a little research I am relatively certain that it is her crop. I came to the conclusion that she just had a full crop that she would soon digest, but four days later the mass is still there and still very big. It is rock hard which I don't think is a good sign. I have been reading through posts trying to figure out what to do, but I am still pretty confused. It is really bad timing because three of her chicks hatched today, so I am not sure how treatment should go with this in mind... I have a brooder that I could put them in if that is necessary. I am really worried about her. If someone could please explain to me, in detail, the symptoms of impacted crop, how it is dealt with (other than surgery), and also what it does to a bird (I don't understand its effects)? Thanks to anyone with experience with any answers.