From the Associated Press on sfgate.com:

ALBUQUERQUE, N.M. (AP) — On the edge of the Mogollon Rim in eastern Arizona, snow covered the ground and blizzard conditions were setting in as biologists prepared to open the gates to a trio of pens, releasing three packs of Mexican gray wolves that would soon have the distinction of being the first of their kind to roam the wild in decades.

Thursday marks the 20th anniversary of that release and a major milestone for an effort that started decades earlier when the predators were first declared an endangered species.

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