Deer

Scientific Name: Genus Odocoileus

Description:

There are two species of deer in Colorado. Mule deer "mulies" have rope-like tails, evenly forked antlers and extravagant ears. White-tails have smaller ears, antlers with a single main beam bearing smaller tines, and, of course, broad white tails. Mule deer bound with stiff-legged gait, the tail held down; white-tails move with a graceful lope, the flag-like tail held erect.

Both species of deer are four to six feet long and stand three feet or more high at the shoulder. Weights of large bucks range over 400 pounds, but does are only half that size. Adult males begin to grow antlers in spring, used in a clash for dominance and breeding rights in autumn. Antlers are then shed in winter.

Range:

Mule deer are abundant statewide. White-tails have become increasingly common in streamside woodland and nearby crop lands along the rivers of the eastern plains.

Habitat:

Mule deer occupy any "edge" habitat, including suburban residential areas.

Diet:

Deer are browsers, feeding mostly on woody vegetation, including twigs and leaves of shrubs and trees, including ornamentals. They also forage on crops, especially corn. Because they eat little grass, they tend not to compete seriously with livestock or elk.

Reproduction:

Deer breed from October to December. After a gestation period of six and a half months, spotted young (usually twins) are born. Deer are frequent traffic casualties, and mountain lions, coyotes and packs of feral dogs prey upon them. Both species of deer are popular game species, and licensed hunters must first draw a license to have the opportunity to hunt deer in Colorado.

Credit:

By David M. Armstrong Department of Ecology & Evolutionary Biology Environmental Studies Program, University Museum of Natural History University of Colorado-Boulder

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