Lance Craighead And Doug Ouren Are standing on a rugged knob in southwestern Montana looking for grizzly 416. They aren't following the bear's dagger-clawed trail. They can't see its silver-tipped mane. They're just listening to a steady beep-ing on their tracking receiver. "That's a strong signal," Ouren says. He checks the frequency and then his notes: Grizzly 416 is a young adult female, fitted with a radio collar. Craighead scours the receding ridgelines with field glasses. To the east a wooded valley rises to the gilded peaks of the Gallatin Range, with Yellowstone National Park just beyond. To the west a hard, vertical hike leads to the Madison River Valley, the home of Ted Turner's Flying D Ranch. Although not strictly part of the park, this is still the Greater Yellowstone Ecosystem, winter home for thousands of elk and at least three collared bears.
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