Doughy Crop

[Coturnix Quail]

One of my hens is very thin, and when i felt her crop yesterday it was a bit mushy. I felt it again today and the mushy buldge got larger. She acts normally, and i think this isn’t sour crop, so what is it and how do i treat it?

 

[Coturnix Quail]

I will check tomorrow morning if there is any improvement.