It is common for these herds to cover several areas during the breeding season. Younger males form bachelor herds with up to 36 members. These groups tend to pursue the female herds, but are often avoided. Older males sometimes return to the same territory each year. However, if they are unable to defend their area from other males, they will wander around alone.
Pronghorns are a very curious and tamable species.
The Sonoran Pronghorn inhabits dry plains and desert. 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.