AS far As I can find out you do not need a license in California for quail except for California Quail. They are worried about native species. We have a lot of quail and sell them so I checked once , checked twice, and checked again on cots. I just think people at the offices are not well educated on the differences in Quail.It's not just native game birds, but both native and naturalized game birds. Ring-necked pheasant and chukar are found in the wild here in California, but they are not native. If you want to keep coturnix, I do not think you would need a domesticated game breeders license because the last time I checked, coturnix was not listed in the upland gamebird list.