What are the symptoms/treatment for sour crop? I have a two year old California White named Jan. she has seemed fine but today when I picked her up she felt quite thin and when I was palpating her crop it feels bloated, squishy and quite large. While I was palpating it yellow liquid started coming out of her mouth. She also has a rotten egg odor. She has always been a poor layer and her eggs usually have a very chalky, thin shell. Thoughts?