Set aside a few blueberries for garnish. In a large bowl, gently combine the chicken, celery, pepper, onions and remaining blueberries. Combine the yogurt, mayonnaise and salt; drizzle over chicken mixture and gently toss to coat.

Cover and refrigerate for at least 30 minutes. Serve on lettuce-lined plates if desired. Top with reserved blueberries.

Yield: 4 servings.