What are the differences in the meat between quail and spatchcock?

Spatchcock is not a bird, it's a method. Similar to butterflying, it's a particular way of flattening any fowl in preparation for laying the entire bird flat on a grill. To spatchcock any bird, simply remove the backbone and sternum, then fold the wings in on themselves, close to the carcass. Lay flat on the grill, turning once until done, then present your guests with your spatchcocked bird.