Habitat Management | Deer Hunting & Management

Fawning Habitat is Important for Deer Populations

Good habitat is important for a healthy white-tailed deer population and necessary for successful deer management. Not only does high quality habitat provide nutritious food and great cover, but good deer habitat also provides a good amount of grass, especially during the fawning season. Deer do not consume very much grass at all–it usually comprises less than 8% of their diet on an annual basis–but tall grass is very beneficial to fawns.

For white-tailed deer, fawns are typically dropped about 7 months after conception. Because the gestation period averages about 205 days in whitetail, the major fawning period is roughly 7 months after the peak of rut. Does bred early in the rut will fawn earlier and those bred late will fawn later, but the majority of deer fawns in a given area will hit the ground at approximately the same time, usually during about a two week period. Fawns, however, don’t usually get a lot of attention from hunters. And there are probably a few reasons.

First, fawning takes place during the late spring and early summer. Many hunters are still “checked-out” at this time of year only to return in late summer or early fall to plant a hunting plot or fill their deer feeders. Secondly, we are talking about fawns here, not big, gigantic, muy grande bucks! Hunters hunt bucks, not fawns. With that said, land owners interested in deer management realize that mature bucks do not just appear out of thin air.

So let’s talk about fawns. The early life of a fawn and the life of an adult whitetail are quite different. For the most part, adult deer do not require a whole lot of grass. The only grass they use in their diet is young and tender. Fawns, on the other hand, need grass and do not even know it. First of all, moderate to high grass makes excellent fawning cover. Not only does this herbaceous cover help conceal newborn fawns, but tall grass is indicative of good white-tailed deer habitat, which is needed by nursing does to raise healthy fawns.

In addition, good fawning cover decreases the impact predators can have on a yearly fawn crop. Research has shown that high quality deer habitat can produce good fawns crops even with dense predator populations. However, even on properties where predators are controlled, if the habitat is poor then fawn crops are not necessarily good. This does not make sense to some people, but it’s true.

First, poor habitat can be caused by many things, but over-grazing by livestock is the number one reason for low-quality habitat. A lack of ground cover makes it really easy for predators (even if few) to find newborn fawns. In addition, generally poor habitat means does will have difficulty finding adequate nutrition to produce milk and raise fawns. You see, over-grazing by cattle leads first to an over-use of grass and then to an over-use of browse species. Over-grazing by goats first leads to an over-use of browse species and then to an over-use of grass species. In either situation, it leads to poor deer habitat and poor fawn crops. Properties that lack at least some open, grass-dominated areas also provide poor deer habitat overall.

Any practice that removes ground cover during the fawning season should be discouraged if you want to improve the fawn crop in your area. The mowing or haying of fields should be postponed at least one month before fawns drop until after the bulk of the fawns have been born, which is usually around the end of June. However, you can figure this out for your area by adding 8 months to the time when the peak of the rut occurs.

Additionally, keep an eye on your predator population and do what you can to control them, but especially in areas with less than ideal fawning habitat. There is quite a bit of time between now and deer season, but the deer you should be thinking about is the one you will be harvesting about 5 1/2 years from now.

Increase Browse for White-tailed Deer

Browse for Deer

Deer and deer habitat varies considerably between the northern and southern parts of the white-tailed deer’s range. The available browse for deer can, too. In the southern U.S., starvation of deer is generally not a problem. Mild winters in the region means deer browse is often available. However, late-winter is still a stressful time for whitetail in terms of food quantity and quality. It’s more stressful when deer density is above the carrying capacity of an area.

When it comes to winter and native deer foods, browse plants are the most important ones on a deer’s menu. In fact, browse plants are of utmost importance during all stress periods, especially summer and winter. This article discusses habitat management activities that can increase browse for deer. Ideally, the information here will take your native browse production and deer management program to the next level.

Talking Deer Browse

Like us, deer eat the best foods they can find. Whitetail consume a plethora of plant species. In fact, one study alone recorded over 400 species consumed by whitetail in an area! However, natural forage is limited to browse, cool season forbs, and hard mast (such as acorns) in the winter. During years of good hard mast production, deer use this forage well into the winter.

However, hard mast availability varies from year to year. As a result, deer turn to alternative food sources. Cool season forb (tasty weeds) availability also varies by latitude and is almost non-existent in freeze-prone areas. Locations at the northern part of the whitetail’s range often come up short on cool season forbs. Likewise, southern latitudes suffer a similar fate during winters with low amounts of precipitation. So how can deer managers increase browse for deer?

Importance of Browse for Deer

Browse plants are the most stable component of a white-tailed deer’s diet. Year-in and year-out, browse is a reliable staple in a deer’s diet. Why? Well, browse consists of the stems, twigs, and leaves of woody plants and these species tend to be long-lived perennials. Think about trees, shrubs, and vines, all of which provide deer browse.

Many woody plants lose their leaves in winter. Then, these deep-rooted plants consistently grow new leaves each spring and summer. This makes plants such as elm, hackberry, poison ivy, green briar, and other small trees and shrubs important browse for deer. They serve as great emergency summer time forage if a lack of rainfall fails to produce warm season forbs.

Perennials, such as trees and shrubs, with established root systems have an advantage over short-lived forbs. Woody plants can access water deep within the soil. Annual plants need consistent rainfall at very specific times of the year. In addition, some browse species–such as important juniper species in the north and live oak in the south are evergreen. These browse species are available for deer during the winter as well as the summer.

Enhancing Browse for Deer

Habitat management that increases browse availability is not very expensive or time consuming. As such, the practice should be a component of every white-tailed deer management plan. Increasing available deer browse is a simple, straight-forward task. It only takes a little work to increase the best trees for deer on your property. In turn, those new browse plants produce additional foods and attract more deer.

Thinning small, 2-5 acre blocks in forested areas is one way to increase browse production and availability. Removing some of the older trees or hinge-cutting them allows sunlight to reach the ground. And blocked-shaped openings are the way to go here. Narrow strip-thinning will not permit enough sunlight for optimal browse growth. Sunlight is needed to allow browse seeds and tree seedlings to take off. This favors some of the best trees for deer and creates more forage for local whitetail.

Alternatively, dense woodlands with totally enclosed canopies offers little for deer in terms of browse, except along the edges. Instead, open up the canopy and allow increased sunlight to spur browse plants and forbs. This increases plant growth, food availability, and ups the number of deer the area can support.

Enhancing Deer Browse

Thinning for additional deer browse is just the start. Another way to further increase browse production is through the use of fertilizer. Adding fertilizer to recently thinned patches substantially increases the productivity of browse plants. Imagine a garden with fertilizer; it does much, much better! In addition, use fertilizer along wood line edges to boost established browse plants, too.

In fact, fertilize the edges of wood lines, along roadways, and even along utility easements. Not only will plants be much more healthy and produce bigger, darker leaves, but deer find fertilized leaves more palatable. It’s just like an unfertilized food plot versus a fertilized one. Deer prefer fertilized areas because they can literally taste the increased nutrition.

In closing, browse is an important food source for whitetail, especially during stress periods. Use these habitat management tips and techniques to increase native forage and browse production on your property. Managing plant communities to increase browse for deer is an important part of a deer management program. Healthy habitat means browse plants that produce year after year, and especially when the deer need them most!

Fire Creates Better White-tailed Deer Habitat

White-tailed deer, like many wildlife species, prefer habitat that is at lower successional stages. Simply stated, deer like plant communities that are dominated by plants that are considered first responders after disturbance. Any disturbance helps set back plant succession, whether it be disking established areas, clear-cutting portions of forests, or natural or prescribed fire. And although hunters understand that deer management practices are designed to improve habitat, many habitat management practices are really only designed to mimic processes that occur naturally.

Of course, when it happens naturally land managers have very little control. Such was the case last year in Texas when the almost 15,000 acre Chaparral Wildlife Management Area (WMA) unexpectedly caught fire. It was March of 2008, but because of extremely dry spring conditions, a fire that started adjacent the area burned 95% of the state-owned WMA! Anyone that knows anything about the Chaparral WMA knows that the area is representative of South Texas brushland, but active habitat and deer management practices maintain a healthy deer herd that boast some big ole whitetail bucks.

Prescribed fire is an effective management tool for deer throughout the white-tailed deer’s range because most native brush species respond well by root-sprouting, regrowing, and providing high-protein browse. You see, most plant species are well-adapted to fire, but all deer managers that use fire as a management tool prefer prescribed or controlled burning. The fire that swept across the Chaparral WMA, on the other hand, was a wildfire. And although wildfires and prescribed fires ultimately have the same impact on native plants, prescribed fires are planned and allow burners the most preparation. Prescribed fires allow landowners the ability to pre-select the areas to be burned and the conditions under which they are burned.

For those interested in using fire as a management tool, it’s recommended that no more than 20% of a property be burned annually. This keeps different successional stages of plants located throughout the property and provides deer with optimal forage. I mentioned earlier that the wildfire that crossed the Chaparral burned 95% of the research WMA. Keep in mind that the perimeter of the area is game-fenced and very few deer were found dead post-fire, so that left all the deer found on the 15,000 acre property about 700 non-burned acres to forage. But white-tailed deer are resilient animals.

Chaparral WMA staff and researchers from Texas A&M University-Kingsville used the effects of the wildfire to monitor how deer living on the area would respond. What would deer eat in the short-term? Would there be enough food to maintain body condition and support fawning? That was just a few of the questions managers needed to answer to determine if the deer herd could respond the the widespread setback in habitat.

It’s important to note that the month of March is smack-dab in the middle of a white-tailed does’ pregnancy. And pregnancy requires a high amount of dietary input. Researchers collected does at two week intervals from mid-April to mid-June and recorded live weight, body condition, rumen contents, and the number and size of fetuses. A total of 28 does were collected and 23 pregnant does carried 6 single fawns, 16 twins, and 1 set of triplets. Shortly after the fire, rumen contents consisted primarily (90%) of cactus and grasses. However, deer shifted to forbs and mast (fruits) as these foods became available after the fire.

Data collected on the Chaparral WMA found that deer were able to maintain body condition and pregnancy after a large-scale fire. However, the management area did have a lot of things going for it that may or may not be available in some areas. First, the deer herd was below the carrying capacity of the land prior to the fire. In addition, the area was fortunate to have an abundance of cactus that provided a moisture-rich post-fire food for white-tailed deer. Although deer were able to switch their diets in order to survive, would this be the case in your area after a wildfire?

Fire is one of the most beneficial tools in wildlife management because when used properly it is very economical. In addition, fire releases nutrients that are bound in dead organic material, fire stimulates the germination of certain plant species, and fire controls plants such as blueberry cedar that are not fire adapted. And although we have learned that whitetail can cope with large-scale fire in South Texas, I do not recommend burning more than 20% of your property on an annual basis. Just keep in mind that with burning 90% of the work takes place before you strike the first match.

The Best Whitetail Deer Food Plots

There are as many different kinds of food plot mixes on the market as there are days in a year, but a lot of people do not realize that the best food plots for white-tailed deer actually grow naturally! In my opinion, natural foods are the best food plots.

I guess by definition what I am writing about today can not really be considered food plots, but more like techniques to provide additional foods for deer. But I believe habitat management is the first step in deer management!

Disking– This is a simple technique that can be implemented (get it) during both the spring and fall. There is nothing magical about how disking works. The only thing necessary is that you use a disk to disturb the surface of the soil so that forb seeds can become “exposed” and germinate.

To promote warm season forbs for deer, disk the selected area before spring green-up. To promote cool season food plots simply disk the area where you would like your native food plot to be during late summer. In addition, to promote more edge and diversity you can alternate disked and undisked strips (strip disking). Continue reading “The Best Whitetail Deer Food Plots”

Deer Density and Supplemental Feeding

When it comes to white-tailed deer management we do know a lot, but we do not know it all. There is a lot that is not known about how white-tailed deer affect their habitat under different densities with and without supplemental feed, however, that is exactly what a research project initiated on two South Texas ranchesd hoped to determine — the effects of deer on native vegetation.

To accurately conduct the research, six 200-acre enclosures were constructed on both ranches. In addition, they were divided into 3 pairs — each with target populations of 10, 25, or 40 white-tailed deer. One of each pair was supplemented with a free-choice (all you can eat) pelleted supplemental ration and the other was left to forage from only native forbs and browse. To document changes in habitat condition, canopy cover and biomass were estimated annually. Continue reading “Deer Density and Supplemental Feeding”