On a quiet, late-spring morning in northern Sonora, Mexico, a beaver putters across a pond the size of a football field. A sinuous dam, 5 feet high, forms the pond’s southern edge. Frogs croak amid gnawed stumps, and the air is alive with birds and flying insects.
Under the starry skies over the jagged Sierra Madre foothills, Randy Young listens. He slings his hammock between two mesquites, deep in the 55,000 acres he manages for the Tucson-based Northern Jaguar Project.
Jaguars are reappearing in the Southwest. A border wall would put an end to that.