Cover and simmer 10 minutes. Season to taste with salt and pepper. Stir in sage and kumquat. Clean out cavities of Cornish hens. Spoon half the couscous mixture in each hen.
Place hens in shallow pan.
Sprinkle 1 tablespoon orange juice over each hen. Sprinkle with salt and pepper. Roast hens at 375 degrees until golden and cooked through, about 1 hour. Makes 2 servings. If Israeli couscous isn't available, use regular grain.