I've read many threads so far and most are saying that there chickens have a large crop and are getting yellow poop. My chicken, has a small tiny crop that's feels empty. I tried feeding her some scratch and she didn't eat it. The poop I saw this morning was yellowish and whiteish and very runny. From what I've read so far, it could be sour crop, or blackhead. Please help! I would like to know what's wrong with her and how I can treat it. Any help is well appriciated!