I haven't read this article in full, but the Orion people can be relied upon for good middle of the road environmental coverage. As the host of a couple of dozen Jacobs and the steward of a flock of Rhode Island Reds and the former benefactor of a trio of Scottish Highlands, I'm glad to see this article on conserving threatened breeds appear in a publication that so many environmentalists will read.
Check it out: http://www.oriononline.org/pages/oa/02-2oa/RareBreeds.html -Allan