I'm a beginner and just have some jumbo coturnix for like 3 months. I'd been feeding them chicken feed "meat maker" that contain 21% of protein because that's the only feed with a higher protein available in my area. So far, they're laying an egg a day ever since I got them. What other sources of protein should I give them? Earthworm, cook ground beef/pork, and body builder powder. Are these choice a good protein source for quails?