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Biology And Management Of White-tailed Deer In Alabama

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has found color perception in deer is much like that of a human who is<br />

red-green color blind (Jacobs et al. 1994). A deer’s sense of hearing is<br />

very acute. Large, moveable ears allow them to detect sounds at great<br />

distances and pinpoint the direction of these sounds.<br />

Perhaps most important to deer is their sense of smell. Relative<br />

to most other species of wildlife, deer have extremely elongated<br />

noses. Within this nose is an intricate system of nasal passages that<br />

provides a large surface area for olfactory (smell) perception. The tissue<br />

lining the nasal passages contains millions of olfactory receptor sites.<br />

Among wildlife species, deer have one of the keenest senses of smell.<br />

This extraordinary sense of smell is the primary method deer use to<br />

avoid predators—including humans. Other important functions of smell<br />

include identification of other deer, identification of food sources, and<br />

identification of individual deer relative to reproductive status. For<br />

example, bucks may use smell to identify does that are receptive to<br />

breeding.<br />

Scent communication is probably the most important aspect of<br />

a deer’s sense of smell. Researchers now have identified seven glands<br />

in white-<strong>tailed</strong> deer, most of which are used for some type of scent communication<br />

(Miller 1997). Three of these glands are located on the legs.<br />

The interdigital glands are located between the hooves of all four feet.<br />

The metatarsal glands are located on the outside of the hind legs and<br />

the tarsal glands are located on the inside of the hind legs.<br />

The tarsal gland is perhaps the most important of these glands.<br />

This structure consists of a patch of elongated hairs underlain by an<br />

area of large sebaceous glands. The sebaceous glands secrete a fatty<br />

lipid that adheres to the hairs of the tarsal gland. This area gives off a<br />

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