ReU operates as a natural reserve for the conservation of grasslands in the Chihuahua desert and its inhabiting species, such as the American bison, the Black-tailed prairie dog, and the Golden eagle. In 2021, the organization Cuenca de Los Ojos team received training in new regenerative ranching practices in ReU and in stress-free management of bison. The immediate result is a livestock-friendlier annual monitoring of the herd, as well as transportation of twenty bison in order to strengthen the herd reintroduced in 2019 into the El Carmen Natural Reserve in Coahuila state.