@dendriteI'm sure you've dealt with sour crop before. One of our hens has a pretty bad base of it right now. We've got her on a probiotic, apple cider vinegar, and some crop massages but it might be too late, doesn't seem to be helping. Not sure if you've had success with other interventions. We have her quarantined right now as to not put the flock in jeopardy. I hate to be pessimistic but I'm starting to think about what I might do with her if she passes, given that the ground is frozen and all.