During my early am check on the flock I noticed one of my fbcm has a balloon filled crop. The crop feels soft and squashy to the touch. Almost as if it's filled with air. This is the second morning I have drained her crop. It's mostly filled with a tan colored liquid. The liquid does not smell bad. I gave her no food yesterday, only water and it's still filled. What is causing this? I'm not thinking sour crop due to the fact there is no foul odor. Liquid will come back out of her beak when she has her head down at times. Yesterday morning I started her on ACV, today I'll be getting yogurt. You think it's just a bacterial issue? I sure do not want to loose this girl.