Good brief article: http://www.nj.com/business/index.ssf/2009/11/post_29.html I've been eating heritage birds for the past 2 years. They are expensive ($120 for a 12-14 lbs bird) but are oooooooohhhhhhh so worth it. These turkeys were actually some of the most critically endangered animals in the US 5 years ago. Ironic how the only way to save them is to eat them. The typical turkeys you can get at a grocery store can only live for about 1 year if they are not slaughtered. These heritage birds can live for over 15 years.