How Humans Are Helping Ravens and Hurting Hawks

You’ve already picked a side in the bird wars, whether or not you know it. As humans carve up formerly empty expanses of the western United States with our roads, electrical towers, and power lines, we’re inadvertently giving a boost to ravens. Meanwhile, the birds of prey that once ruled the land are being left in the dust.

“The ecology of the sagebrush steppe is changing,” says Idaho State University biologist David Delehanty. He means a type of dry, scrubby grassland that’s found in th

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