A sidewinder rattler traverses the dunes of El Pinacate.
Snowy egret, a Colorado River Delta dweller.
Looking at tracks on the Rancho El Aribabi.
Rancho Los Fresnos is a 10,000-acre project of Naturalia and The Nature Conservancy.
Valer Austin in the restored grassland of one of the Cuenca los Ojos ranches.
Jaguar on the Northern Jaguar Reserve.
Bison on the range in Chihuahua.
Cascada de Basaseachic, Mexico's second-tallest waterfall, is among many dramatic features of the Copper Canyon region.
A Mexican gray wolf, one of five released last October in Mexico’s Sierra San Luis. Within a few weeks, all but one had been killed with poison.