Mardi Gras Chicken and Sausage Gumbo

Name: Mardi Gras Chicken and Sausage Gumbo
Ingredients: 1 whole chicken; 8 cups water; 1⁄2 cup butter; 2 teaspoons chicken bouillon; 2 small yellow onions, divided; 1 green bell pepper; 2 celery ribs; 1⁄2 cup canola oil; 10 tablespoons all-purpose flour; 6 cups chicken stock (use the stock that the chicken is cooked in); 1 lb smoked sausage (we like hot); 1 tablespoon Tabasco sauce; 1⁄4 teaspoon cayenne pepper; 1⁄4 teaspoon salt; 1⁄4 teaspoon black pepper; 2 bay leaves; 1⁄4 cup dried parsley