Discover Nature this week and your Thanksgiving turkey. Chances are a turkey will land on your table this week -- a bird simmered in American tradition. The turkey was once so common in America and so well liked, that when United States officials were deciding on a national mascot there was much deliberation between the bald eagle and the turkey. The largest of North American game birds, turkeys are large and powerful, standing up to three feet tall when alert. These birds are easily identified