That definitely looks like quail on quail violence. Once blood has been drawn, they will get pecked at, so it's best to keep them separated until they heal up a bit. The nice thing is, quail heal quite quickly, and they should be healed enough to go back in within a couple of days.
Make sure...
You have too many males, for one. Seven hens will be quite happy with one male. If you have two, they might get along, they might not.
How much space do they have? Do they have plenty of hiding places? The more space and the more hiding places they have, the happier they will be.