Desert tortoises have lived in the deserts of California, Arizona, Nevada and Utah since the Pleistocene. In the early years of the 20th century, they still thrived within the Southwest's arid ...

The average speed of the tortoise is 0.2 miles per hour as it rumbles through the desert of southwest Utah. The Wilson’s phalarope flies more than 4,000 miles on its migration journey between ...

The desert tortoise was added to the endangered species list in 1990. Shortly after, grazing permits were restricted or rescinded in DWMA zones across Utah, Arizona, Nevada, and California.