Chukar Marsala with Capers and Sautéed Spinach

This is our upland game bird recipe modification of the classic Italian dish. 16 fresh sage leaves 8 large, thin slices prosciutto 8 chukar breast halves (4 whole breasts) 4 tablespoons all-purpose flour ½ teaspoons freshly ground black pepper 2 tablespoons olive oil 4 tablespoons butter ¾ cup sweet Marsala wine 2 tablespoons capers in …