@scyllarus might be right. The more I look at the second one, the more hen I see. The spots are light on the first one, but there, so could also be a hen. I don't have any Italians, so I'm not as familiar with them.
I would start by getting this chick onto a proper diet. Cut the treats and get them back on turkey starter as soon as you can. You might try some boiled, crushed egg yolk for this one.
Do you have any Nutri-Drench? That will give it a bit of an energy boost, but to be honest, wobbling and...
What exactly, are you feeding it?
Is it eating, drinking, pooping?
What does the poop look like?
How many quail do you have, and are any others showing ANY symptoms?
Looking at its toes, it looks like its living situation isn't clean. Do the food and/or water have any droppings in them?
What...
I would cut all of the extra food except for the game bird starter. The game bird starter is intended to give them everything they need in the quantities they need for health. By adding the other things, their diet is no longer balanced and best for their health.
That being said, I wouldn't...
I'm sorry for your loss. Keep a close eye on the others in case any start to show symptoms. Have some Nutri-Drench on hand as an energy boost in case one does get sick.
I took the eggs in with me. The only reason it had access was because I had just collected them and was finishing the last of my chores before taking them in.
I only leave the door open when I am inside working. Leaving the door open if I'm not physically present is too dangerous with the number of loose dogs in my area.
I had a super cheeky blue jay this morning. I was taking care of the birds and garden this morning when this jay flew into the greenhouse through the door. I went to chase it out because I didn't want it trapped inside, but instead of flying out, it flew straight to the basket of eggs that I'd...
I think the heat is simply helping her handle whatever illness or issue she has.
What are you feeding them?
What are the lowest temperatures that they're experiencing?
Does she have red eyes?