White-tailed Deer Archives - TheRanch at Camp Ka Hui Ana

Thinking Through the Extended Antlerless and Spike Hunting Season

Chase Nunez MS PhD — Mon, 10 Feb 2025 18:56:53 +0000

If you’ve spent any time hunting in Texas, you’ve probably noticed the extended white-tailed deer doe (antlerless) and spike hunting season in many counties. In fact, Texas Parks and Wildlife Department (TPWD) offers this extended season in 132 of the state’s 254 counties. But why?

Some hunters believe it’s all about herd management, while others think it’s TPWD’s way of thinning out an overabundant deer population. And, of course, plenty of folks just see it as a great way to put more venison in the freezer. The truth? It’s a mix of all those things. At its core, TPWD’s job is to manage wildlife for conservation and sustainable use³—meaning the extended antlerless and spike season is designed to keep deer populations healthy while giving hunters more opportunity to do what they love.

Why The Extended Season?

The main reason for extending the season on does and spike bucks is simple: population control. But here’s the thing—more deer doesn’t necessarily mean a healthier herd. Every piece of land has a limit on how many deer it can support, a concept known as carrying capacity. When too many deer compete for limited food, water, and cover, bad things start happening—disease spreads, malnutrition kicks in, and overall herd quality declines¹, ².

This is a major issue in certain parts of Texas, especially the Hill Country, where deer numbers can skyrocket beyond what the land can handle¹. TPWD relies heavily on hunters to keep populations in check, and extending the season helps increase the number of deer taken, especially the ones that need to be harvested most.

Why Focus on Does and Spikes?

You might be wondering—why target does and spike bucks specifically?

For does, it’s all about maintaining a balanced sex ratio and controlling population growth. Back in the day, shooting does was practically unheard of because more does meant more fawns and faster herd growth. But now that deer numbers have rebounded, proper herd management means making sure there aren’t too many does compared to bucks. A good ratio is somewhere around 1 buck per 1.5 to 2.5 does. Too many does lead to rapid population expansion, which, again, can overwhelm the land’s resources.

As for spikes, that’s a whole debate in itself (check out my article Spikes: To Cull or Not to Cull? from October 2024). But the general idea is that many spikes are genetically inferior compared to branched-antlered bucks of the same age. By focusing harvests on these deer, hunters can help improve overall herd quality over time.

Why Some Counties Don’t Have an Extended Season

You’ll notice that some counties don’t get this extended opportunity—typically the ones where antlerless harvest is already pretty restricted (think archery-only or limited muzzleloader seasons). That’s because those areas don’t have the same overpopulation issues, so TPWD doesn’t need to encourage additional doe harvests⁴.

Does Timing Matter?

There’s an interesting argument that allowing doe harvests later in the season has an added management benefit. By letting deer stay on the landscape through the early part of winter, there’s more competition for food, and does are already putting energy into reproduction before being harvested. This could lead to a slight reduction in overall fawn production. However, the bigger impact comes from simply removing breeding-age females from the population—it’s a numbers game more than anything.

The Bottom Line

At the end of the day, the extended antlerless and spike season is a win-win. It helps TPWD manage deer populations effectively while giving Texas hunters more time in the field. Whether you see it as a way to improve herd quality, keep numbers in check, or just fill your freezer, the extended season plays a key role in keeping Texas deer hunting strong for generations to come.

So, next time you’re out there with your rifle or bow, know that you’re not just hunting—you’re helping manage one of the state’s most prized resources. Happy hunting, and good luck this season!

Bibliography

DeMarias, S., & Zaiglin, B. (1998). The Effect of Doe Harvest on White-tailed Deer Populations. Wildlife Management Handbook, pp. 25–27.
Côté, S. D., Rooney, T. P., Tremblay, J. P., Dussault, C., & Waller, D. M. (2004). Ecological Impacts of Deer Overabundance. Annual Review of Ecology, Evolution, and Systematics, 35, 113–147.
Texas Parks and Wildlife Department. (2006). Mission & Philosophy. https://tpwd.texas.gov/about/mission-philosophy. Accessed January 16, 2025.
Texas Parks and Wildlife Department. (2024). Seasons by County. https://tpwd.texas.gov/regulations/outdoor-annual/hunting/seasons/county-listing/. Accessed January 16, 2025.

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Full Rut Flehmen Response: What It Is and What It Means

Chase Nunez MS PhD — Sun, 22 Dec 2024 20:41:21 +0000

Introduction to the Flehmen Response Across Wildlife Species

Have you ever seen a white-tailed deer buck chasing a doe, or a bull elk pushing around his harem of cows, or a bighorn ram sniff the urine of a ewe? You’ll often see them stop and make a similar face across species and then get a sudden burst of energy with a focusing interest in the females. This wide-eyed smiling appearance erupts when the male’s upper lip curls up as he inhales through his mouth. This is the Flehmen response, sometimes called the Flehmen posture. But what exactly is it and what does it mean?

What is the Flehmen Response and How Does it Work?

Asking the question– “What is the Flehmen response?”– is basically asking– “What is the rut?”– because they are so intertwined. The Flehmen response is a physiological process by which an animal smells pheromones and hormones, causing the animal’s upper lip to curl up while orally inhaling to funnel air filled with pheromones and hormones to the vomeronasal organ, otherwise known as the Jacobson organ. The Jacobson organ is a sensory organ located in the roof of the mouth near the throat. Both male and females can exhibit Flehmen behavior but it is much more common among males, especially among hooved species. When a female is hot (in estrus), she releases hormones and pheromones that indicate she is ready for breeding from her genetalia, feces, urine, and other excretory pathways. These pheromones and hormones are interpreted by the male’s Jacobson organ, which then triggers the males libido (male sexual reproductive drive). The burst of energy that follows the Flehmen response is the physical manifestation of the sex drive and causes the male to seek out the female with the lone goal of reproducing offspring. This is the rut.

The Significance of the Flehmen Response for Wildlife Managers

But what does the Flehmen response mean to me as a wildlife manager or hunter? From the aspect of a wildlife manager, the Flehmen response indicates which animals in the population are actively involved in sexual competition and reproduction. It can also indicate when a subadult animal in the population is becoming sexually mature; if the urine of a young female induces a Flehmen response in a sexually mature male she may be coming into her first estrus and likewise, if a young male begins to posture the Flehmen response then he is probably entering sexually maturity.

How Hunters Can Use the Flehmen Response to Their Advantage

But how does this impact a hunter? For a hunter, the major implication of a target game animal that is showing the Flehmen response is altering the strategy of how to hunt that animal. If a hunter sees an animal in the Flehmen posture, it means that male animal is interested in one thing– reproducing offspring with whichever fine-smelling specimen caused the Flehmen response. It further means that hunting strategies which rely on feeding patterns or over bait/water will be less effective because the nutritional needs fall by the wayside of the rutting male. It also means that the normal movement patterns will go out the window and the new patterns of that male will mimic, at least for a short period, the newfound female friend.

Adjusting Hunting Strategies During the Rut

Although these factors can limit the avenues to a successful hunt, they also specify which tools and strategies will aid in success. White-tailed deer bucks will typically accompany a hot doe for about three days. This allows for multiple breeding attempts, increasing the likelihood of conception and allowing the buck to defend the doe from sexual competitors. During this time, the bucks will hang tight with the doe (following her patterns), are more likely to respond aggressively to calling and decoys, and are much less observant of surroundings. Basically, when their nose and mind are buried in the genitals of the female they’re with, it makes them easier to spot-and-stalk hunt or tempt with sexual competition.

Conclusion: The Flehmen Response and Hunting Success

Understanding the Flehmen response is an essential tool for wildlife managers and hunters alike. Whether identifying reproductive activity in the herd or adjusting hunting strategies during the rut, recognizing this behavior can make all the difference in both conservation and hunting success.

Bibliography:

Hart BL. Flehmen behavior and vomeronasal organ function. 1983. Chemical Signals in Vertebrates 3:87–103.
Gentry Jr. GT. 2019. White-tailed deer reproduction: How fawns are made. LSU Ag Center. Read More (Accessed September 8, 2024).

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