Update on Dolley
This morning, after about 15 hours without food overnight, Dolley's crop was about half the size it was last night--a little smaller than a golf ball, and squishy. So it seems like she does have something in there she can't digest, but some food is getting down. I'm hoping she ate some kind of weed that is just hard to break down, and that it'll get gradually better.
Here she is having some plain yogurt. The idea is to get some healthy active cultures in her digestive tract to help her with digestion. Plus, she loves yogurt.