In southwestern Arizona, this species is found in broad alluvial valleys separated by granite mountains and mesas. These areas experience excessive winter rains followed by a spring drought, and summer rains followed by autumn drought. The dry, sparsely vegetated landscape is due to the arid climate of this region. They are a truly native species, whose numbers were severely threatened with the arrival of European settlers. Within 100 years, populations fell from several million to 19,000 animals.
Pronghorns are easy prey due to their curiosity.
Conservation efforts began at the beginning of the 20th century. References Grzimek's Encyclopedia of Mammals, 1990. McGraw-Hill Publishing, New York, New York. Reference written by Lisa Ingmarsson, University of Michigan. Page last updated 1.