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Mule Deer
 
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Mule Deer  
Distribution
Mule Deer   Habitat
 
The most numerous, widespread and popular of Arizona's big-game animals are deer. The state has two distinct species, the mule deer (Odocoileus hemionus) and the white-tailed deer (Odocoileus virginianus).

The most abundant deer in Arizona is the Rocky Mountain mule deer. Mule deer are not limited to any one type of terrain, being found from sparse, low deserts to high forested mountains. Generally they prefer the more rugged country.

Life History
The mule deer gets its name from its large ears. Coat color is reddish-brown in summer, turning to a blue-gray in winter. Its forehead is much darker than its face, while its throat, belly and inner leg are white. Mule deer have white rump patches and short, narrow, black-tipped white tails.

The mule deer is the larger of Arizona's deer. Adult bucks may weigh in excess of 200 pounds and stand up to 42 inches at the shoulder. Does average 125 pounds.

Typical mule deer antler configuration has each side branching equally into two main beams, each may fork into two tines. The size and number of 'points' is dependent on a combination of age, nutrition, and genetic background. The antlers grow under a layer of skin called velvet. The velvet supplies blood to the growing antlers, which are soft. When fully grown, the antlers harden, the velvet dries, and is rubbed off. Antlers are composed of material similar to that of bone. Each year in the spring, after the breeding season has passed, antlers are shed. It is in preparation for the rut that mule deer grow antlers. Bucks are polygamous and fight for a harem of does during the winter breeding season.

After a gestation period of about 190 days, the does give birth to spotted fawns, often twins. Fawns are 'dropped' about mid-summer. At higher elevations, the fawns are born early after the last spring storms to allow the young to grow large enough to withstand the winter storms. At lower, drier elevations, drop time is synchronized more with summer rains that bring on new plant growth. A fawn's spots will disappear in about two months and the young will stay with their mother until the following spring. They will become sexually mature in a year and a half. In the wild deer have a life span of about ten years.

Hunt History
As befits Arizona's principal game animal, deer received some protection as early as 1887 when a four-month season of October 1 through January 31 was established by the territorial legislature. Buck-only hunting was instituted in 1893, and the season was gradually reduced until 1913 when the new state legislature authorized a two-month season and a two-buck bag limit. Even this was deemed excessive by the state's sportsmen, and a public initiative in 1916 reduced the limit to one buck deer to be taken during the month of October.

Despite a serious overpopulation of deer on the North Kaibab in the 1920s, deer numbers appeared to decline in the rest of the state. In 1929, the mule deer season was closed south of the Gila River, and even as recently as 1946, fewer than 5,000 mule deer (more than 80 percent of all deer killed) were harvested in Arizona. Then, for reasons that are still unclear, deer populations began to increase. As the populations rose, doe and "any-deer" hunts were authorized. In 1961, an all-time high of 91,120 deer hunters took 35,897 deer. More than 86 percent of these were mule deer and nearly 10,000 were antlerless animals. Archery deer hunting was also beginning to provide a significant hunting opportunity.

A series of years of poor fawn survival followed. By 1970, fewer than 16,000 deer were taken and hunt success had fallen to 16 percent. With the institution of permit-only deer hunting the following year, hunter numbers dropped from more than 97,000 to fewer than 68,000. Only about 9,500 mule deer were reported harvested.

Deer permit numbers gradually increased after 1972, leveling off at around 70,000 per year between 1976 and 1982, when hunters took more than 12,000 mule deer, approximately 75 percent of the total deer harvest. Then, a series of wet winters resulted in an increase in fawn survival rates, and hunter numbers and the numbers of deer bagged increased accordingly until 1986, when nearly 86,000 hunters took 25,566 deer, of which 77 percent were mule deer.

Since then, another series of droughts has occurred and deer hunting opportunity is again being curtailed. Today, mule deer comprise about 60 percent of the total deer harvested. Prospects in the near future are even more discouraging, but mule deer are "boom and bust" animals. With the advent of better than average winter rains, mule deer populations will once again improve. The only question is when.


Behavior

Deer feed on grasses and forbs in the spring and summer, however, they are primarily browsers. They eat such items as twigs, bark, buds, leaves, and nuts. Important plants in a mule deer's diet include mountain-mahogany, buckbrush, cliffrose, sagebrush, buckthorn, juniper, and oak. Most feeding is done at dawn and dusk, although human activity may cause a shift to more feeding at night. In Arizona, predation on deer is mainly by coyotes, bobcats, and mountain lions.

Summary
Breeding Period: November-December
Young Appear: June-August
Average Number of Young: 2
Distribution: 90ft-10K ft, statewide except extreme southwest corner of state
Habitat: Desert shrub, grasslands, pinon-juniper, pine, aspen-fir, and mountain meadows
Food Preference: Weeds, palo verde, aspen, mushrooms, yucca flowers, shrubs, oak, mesquite beans, janusia, cliffrose, sagebrush, juniper, coffeeberry, cacti fruit, and filaree in season
Range: 30-50 sq. miles
Live Weight: M-200-225lbs.; F-110-125lbs.
Predators: Mountain lion, coyote and eagle
Updated April 2009
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MULE DEER
RESEARCH PUBLICATIONS




Mule Deer Antler Growth and Hunting Management on the North Kaibab, Arizona
(in press)
The study compares antler spread, antler points, and cementum age of mule deer bucks harvested on the North Kaibab.
[PDF, 415kb]

 
External Resources [More]
- Arizona Deer Association
- Arizona Mule Deer Foundation
NOTE: External sites will open in a new browser window.
 
Downloads [More]


Hunting, Trapping & Fishing Regulations, Season Dates & Draw Information

Detailed information on all rules, regulations and seasons

  • 2014-2015 Arizona Hunting Regulations [PDF, 6mb]

  • Hunt Permit-Tag Application Form [PDF]
  • 2014 Antelope & Elk Hunt Draw Regulations
    [PDF, 4mb]

  • 2014 Spring Hunt Draw Regulations [PDF]

  • 2013-2014 Waterfowl & Snipe Regulations [PDF]

  • New! 2014-2015 Dove & Band-tailed Pigeon Regs [PDF]

  • New! 2014 Sandhill Crane Regulations [PDF]

  • Hunt Arizona 2012: Survey, Harvest and Draw Data
    [PDF, 6mb]

  • 2013-2014 Trapping Regulations [PDF]


  • 2014 AZ Fishing Regulations
    [PDF, 7mb]
  • 2014 Urban Fishing Guidebook
    [PDF, 9mb]
  • 2014 Amphibian and Reptile Regulations [PDF]

  • 2013-14 Raptor Regulations [PDF]
  • Arizona Residency Requirements [PDF]
NOTE: The above files are PDF's and require the free Adobe Acrobat Reader.

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