Melt 50g (2 oz) butter in a medium saucepan over medium heat. Stir in the almonds, onion and uncooked wild rice. Sauté 5 to 10 minutes. Mix in the water, chicken stock cube and 1/2 teaspoon salt. Bring to a boil. Reduce heat, cover, and cook 45 minutes until rice is tender and easily fluffed with a fork.
Preheat oven to 200 C / Gas mark 6.
Season the poussin inside and out with salt, and stuff with the rice mixture. Place them breast side up on a rack in a roasting tin. Brush with melted butter.
Cover the poussin with aluminium foil or a lid, and cook the poussin 30 minutes in the preheated oven. Uncover, and continue cooking 1 hour, or until the poussin are no longer pink and the juices run clear.