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Tree Squirrel
 
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Tree Squirrel  
Distribution
Tree Squirrel   Habitat
 
No fewer than four species and eight subspecies of tree squirrels can be found in Arizona's forests. Of these, the Abert's, a tassel-eared squirrel, is the most widespread and contributes most to the annual squirrel harvest. This squirrel, with its easily discernable ear tufts or tassels, along with its close relative, the black-bellied and white-tailed Kaibab squirrel, are exclusively inhabitants of ponderosa pine forests and the life cycles of the squirrels and the tree are remarkably intertwined. Less well known is the Arizona gray squirrel and its close relative, the rust colored Chiricahua fox squirrel, both of which inhabit riparian deciduous forests and oak woodlands south of the Mogollon Rim. Another species is the chicaree, piney or red squirrel (actually more olive or gray than red in Arizona), which is restricted to the higher forests of spruce and fir above 8,500 feet elevation. Both the tassel-eared and gray squirrels average a little under 1.5 pounds in weight, while the diminutive red squirrel averages just over 0.5 pounds.

Natural History
Tassel-eared squirrels have but one breeding season a year, which is closely correlated with the production of the staminate flowers of ponderosa pine in late April, May, or early June. After a lengthy chase, the female comes into estrus for only one day. She will later give birth to a single litter of from two to four young in a nest made of pine boughs. Throughout the summer, the squirrels feed on the seeds of developing cones as well as on underground fungi or truffles that grow under mature pine trees. These foods are the most nutritious for the squirrel, and only when they are exhausted does the animal resort to feeding on the inner bark of pine twigs-the discarded terminals of which are often seen littering the forest floor. These "clippings" of inner bark are only an emergency food, however, and if deep snow-cover or other factors force the squirrel to rely entirely on this food source, the animal will eventually go into shock and die. Only after years of research was it learned that the periods of tassel-eared squirrel scarcity and abundance were related to the amount of snow-cover and the availability of underground fungi. Most squirrel mortality is during the late winter, and when snow covers the ground for 80 or more days, the mortality rate exceeds the squirrel's rather modest recruitment rate. Hunting apparently has little effect on the animal's numbers as other research shows the lowest monthly mortality is during the October and November hunting season.

Hunting and Trapping History

Tree squirrels have an uneven history as game in Arizona. Having gone from being totally ignored at the time of statehood, to having a limited season in conjunction with the deer and turkey seasons in the 1920s, the season was closed in 1935 due to a perceived lack of squirrels. Too many squirrels in the 1940s resulted in a re-opening of the season, and squirrel hunt regulations have since been liberalized gradually until every species and most subspecies are now subjected to limited hunting. Even the once sacrosanct Kaibab squirrel is now hunted, and the only totally protected squirrel is the federally endangered Graham Mountain spruce squirrel.

The Abert's squirrel is the most hunted squirrel species and the numbers of tree squirrel hunters and harvest depends largely on the overall number of Abert’s squirrels.

Updated April 2009

 
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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]

  • New! 2014-2015 Waterfowl & Snipe Regulations [PDF]

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

  • 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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