Looks like a "full" crop, my girls are that way at times. If her activities are normal, I would guess it's a full crop. Not sure about the gurgling sounds ... Is that picture of first thing in the morning or in the evening?
Could you get a picture? It's possible she just ate alot, did you feel it? Was it squishy or hard? Check her this evening, then again in the morning. Here's a link I have in my notes
How to treat sour crop and impacted crop and how to know which one you're dealing witheat sour crop and...