Looks like you've got development, yay! Super interested in how this turns out, fingers crossed you wind up with some quail babies! If they continue to develop you will want to contact local feed stores looking for some game bird starter. The only quail I've ever hatched and raised are buttons, and they are ADORABLE! I would have kept them but here they would have to live indoors and we have 6 indoor-only cats. I was considering trying to set them up in a large aquarium with a secure cover, but I knew if anything happened to them because of the cats I'd have never forgiven myself, so they went to live with a fellow bird lover with better options for them. They were really fun, when they first hatch they are so tiny, but man can they zoom around! I set them up in a plastic storage container as a brooder, with a heat lamp and some towels stacked on the end where the light was, the first few days they would all be up on the top layer except when they were eating and drinking, and by the time they were a week old I started removing layers of towels (they were just bar towels folded up). There are many people here with lots of experience who can give you great advice, just sharing my very limited experience with Buttons.