Predators shape river world top-down

From Missoula, Mont., at the annual meeting of the Society for Conservation Biology

In an anti-intuitive tale of predators and prey, riverside birds are prospering more outside a national park designed to protect them than inside the park, say wildlife biologists.

Strips of land cradling waterways, or riparian zones, that are outside the boundaries of Grand Teton National Park have more-diverse bird populations, says Peter B.