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Deer rut is mating season. Rut happens at the same time every year, autumn. Decreased day length, called photoperiod, and temperature trigger the change in the brain that leads to rut. This happens in the fall as the seasons heads toward the shortest day of the year in December.

Does are in estrous, otherwise known as heat, in 17 to 22 day cycles. The cycle stops when a doe conceives. For bucks, the rut ends when daylength is very short. They've often lost a lot of weight and are exhausted from intense fighting with other bucks. The distraction of rut keeps bucks from eating enough to maintain their physical strength. Young bucks sometimes get to mate only when the mature bucks in prime health are exhausted.

The bucks breed the does so they they can carry their young over the harder winter and be born during the pleantaful time of spring. This gives the young a better chance of survival.

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10y ago
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14y ago

Whitetails have extraordinary eyesight. Their ability to hear the subtle snap of a twig is uncanny, and their sense of smell is remarkably acute. Simply put, whitetailed deer are the perfect forest dweller. Throughout most of the year, their ability to elude danger is impeccable. With this reputation, they are the perfect big game species.

But, as with all formidable opponents, whitetails too have a weakness. Their natural urge to breed and defend territory causes them to let their guard down. Scarcely visible throughout much of the year, during the annual rut, bucks literally set their own trap. Savvy hunters looking to close a tag can take advantage of a wide range of indicators, strategies and tendencies to entice a buck to within shooting range. From interpreting rubs and scrapes to making mock scrapes; rattling and calling, using decoys and even scents, the rut presents a unique time of increased vulnerability. For most whitetail hunters, the rut marks the single best time of year to harvest a buck.

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14y ago

Moose and deer go into the rut in late fall.

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11y ago

a gland in the dos eye that tells her the daylight is shortening ... Bucks then go into rut when the female is in estrus

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Q: What causes whitetail deer rut?
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