July 23, 2019

Mule Deer Buck Battle

There ain’t room enough for both of us here. Git out of town before the sun goes down.

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Reproduction and Nutrition of Desert Mule Deer With and Without Predation

Abstract

Desert mule deer (Odocoileus hemionus eremicus) in central Arizona declined from 11 deer/km2in the early 1960s to 2 deer/km2 in 2006. We had the opportunity to examine the causes of desert mule deer population fluctuations in Arizona from 1960 to 2006 by contrasting deer density, body condition, productivity, and diet quality inside and outside of the 259-ha Walnut Canyon Predator Proof Enclosure (WCPPE) on the Three Bar Wildlife Area (TBWA) in central Arizona. Mule deer inside the enclosure increased from 11/km2 in 1997 to 32 deer/km2 in 2004 while mule deer outside the enclosure in the TBWA remained between 1 and 5 deer/km2 during the same time. There was no difference in body mass and number of fetuses (in utero) between mule deer inside and outside the enclosure. However, there was evidence of mule deer in better body condition inside the enclosure compared to mule deer outside the enclosure. Mule deer inside the enclosure consumed a diet higher in energy than mule deer outside the enclosure. There were no differences in plant species diversity or composition inside and outside the enclosure. Current mule deer densities in the study area are below what the environment is capable of maintaining, and a history of higher mule deer densities inside WCPPE over 40 y has not resulted in measurable impacts on the highly diverse plant communities of TBWA. Observed differences in diet quality of mule deer may be related to trade-offs incurred through predation risk, where mule deer inside the enclosure are maximizing their energy intake without the burden of predator avoidance and vigilance. Our study provided evidence that current mule deer densities in central Arizona are below what the environment is capable of sustaining.<<<Read Entire Report>>>

Some very valuable information here.

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Are We Losing the Desire for Quality Whitetail Deer in Maine?

dennisThe other day George Smith wrote in his column in the Bangor Daily News:

The differences between deer and moose management are fascinating. In areas of the state with few deer, we still allow unlimited harvests of bucks. But Lee [Kantar, Maine Department of Inland Fisheries and Wildlife head moose biologist and former head deer biologist] says any increase in the harvest of bull moose will negatively impact the quality of those bulls. Do we not care about the quality of our bucks?

This prompted me to start asking around from those that would know about this sort of thing and where I might actually get an answer. It is a complex issue where one element does not necessarily control the “quality” of bucks or bull moose. The first hurdle would be to determine what is meant by “quality”.

One might gather from this short statement, a claim made by Smith, that there appears to be a concern for preserving and/or protecting the quality of bull moose. Fine. Does there exist the same feeling toward protecting the quality of Maine’s whitetail deer buck population? I certainly can’t answer that question, only to resort to the plan that the Maine Department of Inland Fisheries and Wildlife (MDIFW) devises every 15 years and the most recent amendment to that plan in the Maine’s Game Plan for Deer. I will say that, while certain aspects of the plans are followed, too much of it seems to be treated as suggestions rather that actual management goals that are worked at to achieve.

In my mind there is a difference between a “quality” deer herd or even a quality buck population and “trophy” deer. Those would need to be defined. Yet, in my mind a quality deer herd would contain a desired population percentage of trophy animals.

Troubling in the statement made above is that it leaves readers second guessing what the MDIFW is thinking about growing quality bucks and/or trophy bucks. If, as Smith points out, there is unlimited take on antlered deer, even in Wildlife Management Areas where overall deer populations are low, is this a sign that there is little concern about a “quality” deer population, or a “quality” buck population, or a “trophy” deer population?

I asked Dr. Charles Kay, Wildlife Ecology, Jon M. Huntsman School of Business, Utah State University, about this issue. He sent me a copy of an article he wrote and was published in the November/December issue of MuleyCrazy Magazine – 2008. The article deals mostly with what is required to grow trophy mule deer, i.e. “large antlered” mule deer and Kay well points out that mule deer do not achieve maximum antler growth until 6-8 years of age.

Let’s not lose sight of the fact that in Maine are we discussing “quality” deer/bucks (ideal deer populations) and/or “trophy” bucks? In addition to trophy mule deer, Kay gives us a lesson as well in how to grow and maintain quality deer populations that just might solve the concern over trophy deer. He writes:

“Based on studies of other cervids, three factors are key to growing large-antlered mule deer – genetics, nutrition and age. First and foremost is age. The deer simply must live long enough to reach their full biological potential. Bull elk, for instance, do not achieve maximum antler growth until they are 7 to 10 years old. Mule deer bucks too do not achieve maximum antler growth until they are 6 to 8 years. To have mule deer of that age, you need 60 to 80 bucks per 100 does post hunt – a figure most sportsmen can only wish they had. If your post-hunt sex ratios are in the range of 10 to 15 bucks per 100 does or less, as is the case in many mule deer herds, the chances of a deer living long enough to produce maximum antler development is between zero and non-existent.

The only way to achieve the necessary post-hunt sex ratios and age structure is to curtail the buck harvest. [emphasis added] Point restrictions will not work: a fact that has been proven time and again. A four-point minimum antler size might appeal to hunters, but it will do absolutely nothing to produce trophy mule deer, because hunters simply shoot the first small four-point they see and few deer live long enough to reach maximum antler growth. So while point restrictions will increase the average age of the bucks harvested by a year or so, point restrictions, in and of themselves, will do nothing to produce trophy mule deer. Instead only limited-entry seasons have the potential to produce quality mule deer and then only if state game departments do not oversell the number of permits. This is usually not a problem with whitetails since virtually all the land in the Midwest, Texas and back East is privately owned. If the landowner or leasee wants to grow trophy whitetails, it is a relatively simple matter to restrict the harvest. [emphasis added] In fact, according to Dr. James Kroll, who has spent most of his career studying whitetails and who has written a 590-page book on A Practical Guide to Producing and Harvesting White-tailed Deer, it is much easier to raise a trophy whitetail than it is to kill that deer!…

“Under quality management, it is possible to produce a Boone and Crockett whitetail in as little as 3 or 4 years!…

“To produce trophy deer, the animals simply must have a year-long diet of high quality foods. Which brings us to the number one problem in rearing trophy whitetails – too many deer. If the deer population is not kept at one half, or less, of the land’s carrying capacity, the deer will simply not grow big enough to develop large antlers. That is to say, antler quality is density dependent.”

We come back to the question of why, in Maine, does it appear that an unrestricted bull moose hunt would have a negative effect on the herd and an unrestricted buck deer hunt does not?

Certainly much of Maine doesn’t fall into the category Kay wrote about that the problem with growing trophy bucks is too many deer. In many Wildlife Management Areas, overall deer populations are, not only half or less of the carrying capacity, they are near unsustainable levels. What is the buck to doe ratios, post hunt, in these areas? We dunno. It’s like pulling teeth to get the data. I’ve asked before about getting the data and….I gave up.

I would wager that if Mr. Kantar is not willing to offer suggestions to the Joint Standing Committee on what to do about winter ticks on moose, because he doesn’t have enough data, why then should we think there is enough data to know all the conditions pertaining to the moose herd that a determination can be made that killing more bull moose would have a negative effect on the herd?

And has whitetail deer hunting in Maine just become a cash cow? The process has always been that if Maine wanted to grow the population of deer in an area, just limit the number of “Any-Deer” permits. Is that still working? Does it still work in areas with very small deer numbers? If it is working, why aren’t we seeing more deer in those areas where there’s no deer and permits have been reduced? Or have they? Ah, it’s not that simple is it.

If, as Dr. Kay says, in an area where you really want to grow trophy deer, “restrict the harvest”, that certainly has been accomplished because there are so few deer to harvest. Should we then just close the deer hunting season in those areas? Or is this contrary to growing quality deer?

The carrying capacity is far below 50% in many places and the harvest is limited only through the issuance of “Any-Deer” permits because there just aren’t any deer. So then there must be other problems. Yes, there are but I don’t think it’s responsible to just keep blaming it on habitat and climate. I might buy into the habitat argument if I didn’t enter the forest where thousands of acres of prime deer habitat lay vacant. And if a warming climate was a problem, then Maine would be starting to grow too many deer and less moose and Canada lynx.

Maybe there are other problems!

It seems to me, and I might assume here that Dr. Kay would agree with me, this discussion about growing quality and/or trophy deer is dependent upon certain elements of the deer growing and maintainance equation exist in order to accomplish the tasks Kay points out. He says genetics, nutrition and age are necessary to grow quality deer. It seems Maine’s problem isn’t growing quality deer, it’s growing deer.

Maybe an examination of the Maine Antler, Skull and Trophy Club data on “quality” deer harvest in Maine over the past several years will give a better indication about growing quality and trophy deer.

It seems to me that the size of the trophy deer is diminishing slightly, but I still contend that Maine’s bigger problem is growing deer. So long as the mantra persists that it’s the climate change and the loss of habitat, Rome will keep burning.

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Because The Coyote is Coming

More and more studies are showing that the presence of large predators affects deer populations. When there are too many coyotes, for example, in an area that will not support that number, coyotes raise the dickens with deer populations.

Reading this article (linked to below) I am reminded of no fewer than two articles I have written in the past. One was in July of 2010. It was actually a republication of an article written by Dr. Charles Kay for Muley Crazy Magazine called, “Predator Mediated Competition.” If you are not familiar with that term, I suggest reading Kay’s article as it will help to better understand the issue as well as the article I have linked to. In short, predators, such as coyotes, so long as there exists more than one prey species, could drive a certain species, say the whitetail deer or mule deer, into unsustainable levels and keep them there.

The second article was in reference to Dr. Valerius Geist who attended a gathering of hunters and game managers in Virginia concerned with too large populations of whitetail deer. The article I wrote was in December of 2010 but Geist’s comment was made in 1994.

…in 1994, Dr. Valerius Geist, while attending the annual Southeast Deer Study Group meeting in Charlottesville, Virginia, said the following as it pertained to a perceived “problem” among wildlife managers in dealing with too large populations of whitetail deer.

“Enjoy your problem while it lasts, because the coyote is coming. Once he’s here, you’ll miss your deer problems.”

It now appears that in places where once there was a problem with too many deer, the deer are disappearing leaving managers wondering what happened. Here’s just one example of that.

“On a 2,000 acre tract of land in north Alabama, biologists at the University of Georgia’s Deer Lab compiled a different study. In the area 22 coyotes and 10 bobcats were removed before fawning season. Fawn survival increased by 250 percent.”

“An Auburn University deer study showed that trapping and removing coyotes and other predators improved fawn survival in that area by about 80 percent. The University of Georgia deer researchers analyzed 353 coyote scat samples from two public hunting areas. During the fawning time, coyotes switched almost exclusively to fawns for food.”<<<Read More>>>

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Gorgeous Picture of Mule Deer

PHOTO: Very Nice Mule Deer Buck

NiceMuleyBuck

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Cougar Takes Down Mature Mule Deer Buck

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