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Biology And Management Of White-tailed Deer In Alabama

Biology And Management Of White-tailed Deer In Alabama

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searching for breeding opportunities. This means hunters have less<br />

opportunity to encounter a buck out searching for a receptive doe. Having<br />

too many does in a herd also appears to contribute to the suppression<br />

of many natural buck behaviors, such as rubbing and scraping. Bucks<br />

simply do not have to expend the energy on such behaviors in order to<br />

ensure breeding opportunities.<br />

BUCK AGE STRUCTURE<br />

Buck age structure is of equal importance to a deer population.<br />

The term age structure refers to the proportion of animals in differing<br />

age classes for both sexes. There is a good proportion of mature deer (3-<br />

1/2 years old and older) in the buck segment of a normal deer herd. The<br />

total number of mature bucks in such a population generally is fewer<br />

than the number of younger age class bucks (1-1/2 and 2-1/2 year animals).<br />

This can be attributed to greater competition for breeding<br />

opportunities and higher natural mortality for older bucks.<br />

As mentioned earlier, deer of both sexes have well defined dominance<br />

hierarchies. <strong>In</strong> herds where adequate numbers of mature bucks<br />

exist, the older bucks do most of the breeding and suppress breeding<br />

activity in younger, immature bucks. Breeding is an extremely stressful<br />

period for white-<strong>tailed</strong> bucks. Mature bucks are more physically<br />

suited to handle these stresses than are immature bucks. Well proportioned<br />

buck age structures result in immature bucks being spared the<br />

rigors of the breeding period. Consequently, these animals often enter<br />

the spring in much better condition.<br />

When coupled with balanced adult sex ratios, the effects of<br />

proper buck age structures also are manifested in the form of increased<br />

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