The Rut

A big White-tailed buck stands at the edge of a road in Iroquois County in pursuit of a doe.

December 3, 2020 – The Midwestern autumn brings shorter days, colder temperatures, and behavior changes to those majestic whitetail bucks. The new growth of antlers that began in the spring has hardened and reached its’ maximum growth for the year. The bachelor groups of spring and summer have disbanded and the males are now on their own. Standing and showing little concern while in plain sight at the edge of a woods, or in the corn stubble of a harvested field, with his mouth open and head tilted up into the wind, the buck is clearly focused on something else. White-tailed deer have very keen senses and along with the bucks very sensitive nose, he also has a special sensory organ in the roof of his mouth that can detect females that are approaching estrous. The strong desire to breed is why, at this time of the year, we see those seemingly out of place whitetail bucks that are in pursuit of a mate. Standing with their nose in the air and with their mouth open and lip curled up blocking their nostrils they are tasting the air for that special signal, and during this time that buck has only one thing on his mind. The male deer can actually locate a doe nearing estrus by tasting the airborne chemical signals from quite a distance. Seeing the normally shy, overly cautious, and sometimes totally nocturnal whitetail buck out during the middle of the day can mean only one thing, it is the breeding season, also known as the rut. The breeding season for White-tailed deer is where caution is truly thrown to the wind and love is literally in the air. The peak of rut takes place from late October through November, but breeding will continue through January as the rut heats and cools and finally ends for another mating season for the whitetails of Illinois.

With lip curled up and mouth open a small buck chases a doe through the prairie grasses.

The Boss

Large 12 point White-tailed Buck with swollen neck.

Large 12 point White-tailed Buck with swollen neck.

November 12, 2018 – A large 12 point buck, photographed just west of Kankakee recently, displays those tell tale signs that the breeding season for White-tailed deer is occurring in our area. Also known as the “rut”, the mating season for the White-tails really gets in gear by the end of October and lasts through January. This burly buck with his huge swollen neck stands like a stone fence between the doe and the intruder. The explanation for the enlarged necks on White-tailed bucks this time of the year during rut is widely believed by wildlife biologists to be the affects of a surge of the testosterone hormone. The increase in hormones is also believed to cause the aggression and the lack of fear that is a well known behavior of the White-tailed buck during the rut.