Every hunter wants to harvest a trophy buck, but when it comes to white-tailed deer hunting the reality falls somewhere between shooting a big buck versus deer overpopulation. On one hand, you have hunters that really just want to harvest a single deer, preferably a big, mature buck. Then on the other hand, you have deer numbers that need to be controlled. This will probably not come as a surprise to you, but the average deer hunter only wants to harvest one deer, or more precisely, one buck. While most hunters love seeing numerous deer while out in the field, an important part of deer management is population management.    

The reason I bring this up is because just this last week ranches near Kerrville, on the western edge of the Texas Hill Country, were finding dead deer after several days of cold and wet weather. The cause of these deaths — malnutrition. And before assuming that these deer were confined within a high fence that maintained too many animals, I’ll let you know that they were not. In fact, most of the animals found dead were free-ranging white-tailed and axis deer, but they were all starving. Basically, the deer population of the area has exceeded the carrying capacity of the winter range. They were all competing for limited winter forage, and the weakest died. (more…)

Last week I wrote an article discussing harvesting white-tailed deer early in the season, which I strongly recommend. The article discussed why it is important to remove deer before winter, especially does, and the benefits of having a deer herd at carrying capacity. Well, one reader posed a question that many of you may be interested in:

“What about nursing fawns early in the season? Will taking lactating does hinder growth and development in these young deer?”

Yes and no. To begin, whitetail fawns are usually weaned and become functioning ruminants at eight weeks of age. Most fawns at southern latitudes are born in late May and June, meaning the majority of fawns are weaned by the end of August. And this makes sense from a biological perspective, because as late-summer food sources deplete the doe can then rely on the fawn to nourish itself. This covers the majority of whitetail fawns that hunters will encounter in the field during the fall hunting season. (more…)

Deer hunting season takes place in the fall for one primary reason — to remove excess animals from the landscape prior to winter. When it comes to the deer carrying capacity, winter is THE limiting factor. As a result, proper harvest is essential for the deer herd found on your property, their habitat, and your overall deer management program. With the the onset of winter just around the corner, do not forget to harvest deer, especially does, as early as possible. I mention this now because as the end of the year approaches, the time that many hunters have to head to the field decreases. The Christmas and New Year’s holidays can take away from your days in the field. It’s hard to harvest deer and reach harvest quotas if hunters can not make it out to the ranch.

With winter officially kicking off on December 21, time is running out to get the deer population on your property down to its winter carrying capacity. If you are not sure what the proper deer carrying capacity for your ranch is, then you first need to contact a wildlife biologist in your area. Carrying capacity refers to the number of deer that a property can over-winter. It varies by ecological region, habitat type, and ranch, but it is the first piece of information you need to properly manage any deer herd. If the proper density for a ranch is 1 deer for every 10 acres, then a 1,000 acre ranch can over-winter 100 white-tailed deer. Excess animals, if they exists, must be removed annually to ensure the health of the remaining deer. 

With much of the deer season already gone, why should you always aim to harvest deer as early as possible in the season? Below I have listed three good reasons why early doe harvest is important for your deer management program. (more…)

Each landowner or property manager must recognize the habitat needs of white-tailed deer on a continual basis and direct management towards meeting those needs. Since white-tailed deer have a relatively small home range of about ½ to 1 mile in radius over an annual basis, all of their needs for growth, reproduction, and cover must be met within this unit. Deer management is about food management–as in habitat.

Whitetail will seldom move from within their home range to meet their needs, even though better conditions may exists in the surrounding area! Deer are very versatile in their feeding habits and will eat a wide variety of items, including fruits, browse, forbs, agricultural crops, and even small amounts of grass. Deer “perform” best in habitat where a great variety of preferred food items are present. (more…)

In general, white-tailed deer generally live within a home range of approximately one square mile. However, this range can increase during the breeding season, especially for bucks. Unless your property is high-fenced, a deer’s daily movements within that home range throughout the year often results in movements into habitat found on more than one adjoining landowner.

As a result, it is important to understand that landowners share individual animals. For this reason, the potential for successful white-tailed deer harvest management diminishes as landownership size decreases. It makes sense that as the size of individual ranches continues to decrease throughout an area, effective and meaningful management can be a challenge.

Fragmentation of habitat often results when changing land uses occur on adjoining tracts of land that were once uniform rangelands or woodlands. The increasing cost of land and the desire for folks to have just a small “piece of heaven” only increases fragmentation issues. (more…)

A deer herd should be managed as two separate populations. The female segement of the herd must be managed to maintain productivity. The number of new deer added to the pre-hunt population is a function of the number of fawns born and their survival until until the fall. The number of fawns born is primarily determined by the number of does, but the survival of fawns, however, is mostly dependent upon the physical condition of does, although predation is certainly a factor is some situations. (more…)

The question of how many deer to harvest and in what proportion is asked in developing all deer management plans, but seldom is answered in an objective manner. Ideally, a deer manager would know exactly how many deer of the proper age and sex should be present to best meet the management goals for a particular ranch or tract of land.

With accurate information on herd size, the buck to doe ratio and fawn survival, and with considerations for rainfall, habitat conditions, and hunting on neighboring property, the manager could then prescribe the percentage of the herd that should be harvested to optimize management objectives. Situations such as this where all pertinent information is availalbe are, of course, very rare in deer management. (more…)

Harvest really is a key management tool required to manage white-tailed deer populations. However, remember that successful management must also involve proper habitat management. The basic strategy for deer population mangaement, which involves harvest, consist of the following:

1. Deer numbers must be maintained at or below the carrying capacity of the property to maintain excellent body condition and maximum antler growth. It’s kind of like cows in a pasture. You can have more, but body condition and overall health will suffer.

2. The desired sex ratio must be achieved for proper recruitment levels and desired harvest quotas. Maintaining too many does will require harvesting many deer each year. Too few does and recruitment may not be adequate to replace deer harvested.

3). The harvest rate of bucks must be established to attain the desired age structure of bucks available for harvest (which includes spikes and other culls as part of the buck harvest quota). A lower harvest rate keeps more bucks in the older age classes.