Next time, if you have the space and want to keep the roo, just separate him and give him a plush friend. I raise all my quail alone like this, and only bring them together for short periods for breeding, why? Because Coturnix, they don’t “need” other quail, that’s just not true, think about it, half of the posts on here are about birds having fights, and that’s because most quail only live in coveys in the winter, not during the volatile breeding season, and coturnix, they aren’t social the way other animals are, they don’t make “friends” or have close pair bonds like other species of quail, which is another reason why birds like buttons will fight, is because they actually do pair-bond and people will add too many birds, but what do quail actually socially do for each other that they need? They don’t preen each other, all they do is mate. They just don’t want to be the only bird if a predator comes, is my theory. And my roosters? They never crow with the plushes, never pace, never pluck, they will fight me to defend their plushes when I have to wash them. So, plushes.