Janos Biosphere Reserve

The biosphere reserve encompasses plains, mountains, and poplar forests inhabited by black bears, deer, bighorn sheep, and pumas, plus a sizeable colony of prairie dogs. Moreover, Janos shelters the only wild bison herd left in Mexico. The reserve is also the winter home of grassland bird species and thick-billed parrots, an endemic species. 

While the reserve restricts access, you can visit with a previous reservation or even stay overnight. And, if you are interested, you can help out with current research projects.