Just an update for those following this thread. My little Naomi has had a relapse of her sour crop. She's back in the house and waiting for some copper sulfate from Peter Brown. What a guy he is. He runs First STate Veterinary Supply and I've got to say he is top notch. When we need things for our chickens, we ought to buy from him. He is so willing to help and has a real heart for birds, as we here do.
Anyway, Naomi's crop in the past had gone down when I brought her into the house. This time, it did not so I'm not certain where we are on this. I will try the instructions from Peter Brown to make sure that I've done everything possible. If that is not successful, I am going to do the crop surgery as per FabulousMandy. I do trust that something is going to work. Thanks, all, for the concern.