Ergot usually attacks the growing grain, pryor to harvesting. It is present when delivered to the feed manufacture. The manufactures don't check for the contamination before they use it in feeds.Thank you. That could be it. I've been feeding the same feed to both the male and female quails for quite some time so I doubt it was in the feed to begin with, but it's possible the feed got contaminated while she was outside or she ate something weird. I just got some new Wild Game Grower feed that I'll be giving her now, and I'll be washing the food bowls and throwing out the old stuff. I also gave her a bit of boiled egg.
She's mostly just sitting in one place (probably due to her foot), but other than that, she's fairly calm and alert. She seems to be a bit better than yesterday.
One avian hospital I've been looking at is booked until mid-December, and the other places won't be open until Monday, so it may be a while until I'm able to get an appointment.
Thankfully I live in CA so it's not as cold as other places, but I've added a small heater in the room where she is.