She suffered with pendulous crop for a while which we worked through, then at one point she had an impacted crop, but never a sour crop. So yes, she had crop issues on and off, mostly though, she walked like a penguin, had difficulty running, definitely quit flying, would spend a lot of time standing around even while out in the yard. She never stopped eating and drinking however but would still go lethargic from time to time and self isolate.
We provided wet mash with scrambled egg with coconut oil, one of her favorites. The oil seemed to help with crop issues and kept her crop working properly most of the time -- or -- we just got lucky with that.