Citrus-Glazed Quail with Roasted Peaches, Polenta, and Bitter …

3 blood oranges, juice only; 1/4 cup peach nectar; 8 3-ounce semi-boneless quail; Extra – virgin olive oil ; Kosher salt and freshly ground black pepper; 4 peaches; 1 recipe Polenta (see recipe , below); 1 bunch bitter greens, for garnish …