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Around 200 animals currently are believed to exist ... is an endangered subspecies of pronghorn that is ... The Sonoran pronghorn is endemic to the Sonoran Desert ...
The Sonoran Desert. The Sonoran Desert is a North American desert and ecoregion which covers large parts of the southwestern United States and of northwestern Mexico. With an area of 260,000 square kilometers (100,000 sq mi), it is the hottest desert in Mexico. The western portion of the Mexico–United States border passes through the Sonoran ...
There are 350 bird species, 20 amphibian species, over 100 reptile species, 30 native fish species, and over 1000 native bee species found in the Sonoran. [13] The Sonoran Desert area southeast of Tucson and near the Mexican border is vital habitat for the only population of jaguars living within the United States. [ 14 ]
Located within the Yuma Desert, a lower-elevation section of the Sonoran Desert, the refuge was originally established in 1939 to protect desert bighorn sheep. [2] It is home to more than 275 different species of animals and nearly 400 species of plants. [3] CPNWR is the third largest national wildlife refuge in the lower 48 states.
The Colorado River toad (Incilius alvarius), also known as the Sonoran Desert toad, is a toad species found in northwestern Mexico and the southwestern United States.It is well known for its ability to exude toxins from glands within its skin that have psychoactive properties.
The flat-tail horned lizard is named for United States Army Colonel George A. M'Call, [4] who collected the first specimen in California in the 19th century. The species occupies a small range in the Sonoran Desert of southeastern California, southwestern Arizona, and extreme northern Mexico in the Baja California and Sonora states. [2]
"The Sonoran Desert National Monument is a magnificent example of untrammeled Sonoran desert landscape. The area encompasses a functioning desert ecosystem with an extraordinary array of biological, scientific, and historic resources. The monument’s biological resources include a spectacular diversity of plant and animal species.
The ecotone between the hotter, drier Colorado Desert and that of the relatively cooler and wetter Arizona Upland occurs from Parker, Arizona southeast to near Phoenix, then south to Organ Pipe Cactus National Monument. [2]: 6 Density of vegetation gradually diminishes moving from the Arizona Upland into the Colorado Desert proper.