Do mule deer prefer high ground or low valleys in arid areas?

Habitat Preferences

Mule deer in arid regions often occupy areas with rocky outcroppings, canyons, and mountainous terrain. These features provide shelter from harsh winds, protection from predators, and access to essential resources such as water and forage. When selecting a specific location, mule deer frequently choose areas with a north-facing aspect to minimize heat gain and reduce water loss. This is particularly evident in areas with a high degree of insolation, such as those with south-facing slopes.

Water Sources

Reliable water sources play a crucial role in mule deer habitat selection. In arid areas, these deer often congregate around springs, seeps, and streams, which are typically found at lower elevations. However, mule deer are also capable of accessing water sources at higher elevations, often by traveling short distances to these locations during periods of high water demand. In areas where water is scarce, mule deer may rely on snowmelt or temporary waterholes, which can be critical to their survival.

Foraging and Cover

Mule deer require access to suitable forage, which is often found in areas with a mix of grasses, shrubs, and forbs. In arid regions, these deer frequently target areas with creosote bush (Larrea tridentata), greasewood (Sarcobatus vermiculatus), and other drought-tolerant vegetation. Adequate cover is also essential for mule deer, particularly during periods of high predator activity. In high ground areas, mule deer often utilize rocky outcroppings, dense shrub thickets, and tree-lined drainages to conceal themselves from potential threats.