Sounds like Sour Crop. Here's a couple of very good articles to readThanks for y'alls reply. Her crop this morning felt full of air/liquid - no solids. I tried inducing vomiting to see what came up and she did a little bit (and it smelled gross). I originally thought it could be a sour crop but would that cause her to drop weight? She now has no appetite and this morning wouldn't even eat treats. Thoughts?
https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/
http://www.backyardchickens.com/a/impacted-slow-and-sour-crops-prevention-and-treatments