Hunters pay their share in fees and take to the woods. For most, their aim is to bag a deer (pun intended). Whether a hunter is searching for that “trophy” (it’s often all in one’s perspective) or simply “meat hunting”, all are seeking an “opportunity”. There are some species of game we hunt where opportunity is limited. In other words, game officials determine to what extent a certain species can yield in a harvest and still fall within the guidelines and goals of each species’ management plans. This limitation is most often seen in lottery type permits issuance. Maine as an example, has the moose hunt. Only a specified number of permits are issued and to have a chance at receiving a permit, a hunter must enter a lottery.
It is not often that we see this kind of restricted opportunity with deer hunting. In Maine’s case we are now seeing reductions in opportunity as the deer herd has pretty much disappeared in portions of the state. In Northern Maine, the shooting of female deer is now forbidden and there is talk of shortening the hunting season in those areas or perhaps even a complete closure. This of course means lost opportunities for hunters. When those opportunities are gone, so is revenue to the fish and game agencies that depend on that money to operate. This is why fish and game hates to restrict hunter opportunities and they should realize that when there is no game, interest drops as well.
So what is stealing your opportunities?
Let’s make one thing perfectly clear. There are many people out there today – environmentalists, animal rights groups and anti hunting organizations (some may be hiding at your local fish and game department) – that could care less about your hunting opportunities. Under the guise of “protecting” wildlife, their agendas all too often put into peril the very species they claim to be wanting to protect, which of course makes us question their motives.
Most state fish and game departments manage game animals for surplus populations because their mandate is to provide hunting opportunities. Some states aren’t too concerned about providing enough deer to hunt but instead are trying to come up with creative ways to reduce herds down to healthy levels. Maine is not such a state, at least not in Northern, Eastern and the Western Mountain regions.
I have repeated over and over that deer management is a very complicated issue, one that I don’t pretend to be an expert in and one that I wish those who claim to be experts at, would admit they don’t understand or have all the answers.
I would like to make an attempt at explaining my interpretation of hunting opportunities – what creates them and who or what steals them away.
Maine is a unique geographical region in that we often discuss Maine as being two states – the northern two-thirds and the lower one third. This follows the civilian population but also the same can be said about the weather. The Northern two-thirds of the state is much of the area where the deer herd is dwindling away to nothing, leading some biologist to believe it is unfeasible to try to manage a whitetail deer herd there. It is in this northern area that I would like to focus on for this article. I also want to attempt to keep this as simple as possible and yet acknowledge the unknown and complex factors not covered.
If the Maine Department of Inland Fisheries and Wildlife is managing whitetail deer populations for surplus to provide hunting opportunities for Maine residents (which I believe they are), this means they have to manage or control as much as they can. In other words, they can’t control the weather but they can control how many and of what sex deer get taken in the annual harvest. When herds are struggling, as is the case in Northern Maine, efforts must increase to protect deer, perhaps in ways they have never had to in the past.
I was rereading and reviewing “White-Tailed Deer Population Management System And Database” by Gerald R. Lavigne. There is a section in there that deals some with deer mortality and how this is effected by severe winters.
We have all heard more than we want to about how it’s been the past couple of winters that has destroyed the deer herd. There’s no argument from me on that. What I will question is whether MDIFW really has a grip on the other factors that cause deer mortality.
Deer mortality is quite simple really. Just imagine all things that cause the death of a deer; natural, legal hunting, poaching, run over by car, becoming prey to such things as bear, coyote, bobcat, etc., disease, etc. etc. MDIFW has a system in place that accurately tracks the number of deer killed and tagged during the hunting season. Everything else is merely an educated guess based on many things of which I won’t try to explain because I don’t understand all of them.
On pages 31 and 34 of “White-Tailed Deer Management…….”, Lavigne provides some interesting pie graphs to help explain what might happen under certain conditions dealing with severe winters. First let me explain some of the terms Lavigne uses.
All-Cause Mortality – I think we have hit on that one pretty good above.
Fawn Recruitment Rate – How many deer born in the spring that survive heading into the fall hunt in November. This doesn’t tell us how many fawns were born only how many survived for that length of time. I believe in Maine this observation is undertaken in August. Fawn recruitment is generally recorded and utilized as a rate. That rate is determined by the number of fawns that survived per 100 adult does. If there are 75 fawns per 100 adult does, then the recruitment rate = 0.75. You may have also heard in your travels someone talking about what the fawn recruitment rate needs to be to sustain a deer herd or some other ungulate game animals, i.e. moose, elk, etc. This rate is highly variable depending on several conditions.
Winter Severity Index- MDIFW has devised a formula from data collected over many years, where they can attach an indexed number to how bad a winter was. They use this index to help determine winter mortality. This is factored into the All-Cause Mortality.
The All-Cause Mortality can and does vary much the same as the fawn recruitment rate depending upon certain conditions. Under perhaps “normal” conditions and depending on whether MDIFW is attempting to grow, reduce or maintain a deer population, an All-Cause Mortality might be 30%. This means that over the course of the year, hunting included, the total mortality of a deer herd can’t exceed 30%. If it does, it may mean the population is beginning to shrink.
If the pre-hunt deer population is 300,000 deer and we use Lavigne’s pie charts, we can make some determinations. If we determine that we can allow a 30% all mortality rate on the deer to sustain a population and we calculate in other factors like winter severity, fawn recruitment and others, then MDIFW can estimate that half of that 30% or 15% of the pre-hunt population can be taken by hunters, i.e. 45,000 deer. – your hunting opportunity. (This is all an estimate but I believe a reasonable one.)
Using the same charts, they tell us that this can be done because it is estimated that the winter will account for a reduction of 7% and 8% is attributed to “other”. More on “other” in a moment. This is all based on what MDIFW believes is a Fawn Recruitment Rate of 0.42 – 42 fawns per 100 adult does.
What happens when we begin to vary those percentages? Let’s say the following year the winter was very harsh and MDFW officials determined that it accounted for 15% of an All-Mortality reduction. If all other factors remain the same, then the deer harvest, your hunting opportunity, will have to be reduced by 8% of the total – an allowable harvest of 24,000 deer. Using this pie chart, etc., it becomes much easier to see how winter severity can cut into your hunting opportunity.
What happens if Fawn Recruitment drops significantly? More hunting opportunity is lost. A lower fawn recruitment means fewer deer replenishing the herd. If you are trying to sustain or grow a herd, a drop in fawn recruitment isn’t good. What effects fawn recruitment? Many things including weather – how late spring arrives, predation, habitat, etc.
Let’s now say that it has been determined that fawn recruitment has been dropping the past few years and is now down somewhere around 0.18, a level some say cannot sustain a population. Combine that with two severe winters, a bloated coyote population, a near record breaking population of black bear and basically what you end up with is no hunting opportunity. You may have opportunity but nothing to hunt, as has been the case in parts of Maine the past few years.
With all of these factors, it must be pointed out that the allowable All-Mortality also comes down. If something doesn’t change, not only is hunting opportunity eliminated, but a continued reduction in the deer population spirals downward until it can virtually disappear.
With that understood, then we hunters and MDIFW shouldn’t be discounting ANY factor that can change the makeup of Lavigne’s pie charts. I have read where Maine’s fawn recruitment is very low. Do we have a handle on why that is so? What can we do, other than change the weather, to improve that? Are biologists aware of the fact that the mere presence of predators can cause deer to abort or not conceive at all? Is there the available habitat for does to fawn in, protect and feed their young? We must look at all contributing factors.
The “All Other” part of that pie chart can make up as much as 8% or 10%, perhaps even more. We just don’t know because we don’t closely track this information. “All Other” comprises poaching. What can all of us do about poaching. I think we know the answer to that. There’s also automobile collisions. Can we take a look at where these occur most and make some changes? Are people feeding deer in their back yards causing the death of a few hundred deer because they get run over while crossing the road to get to the feed? Do we need better signage and education to get drivers to slow down and be aware when in deer crossing zones?
“All Other” includes predation. Why isn’t the MDIFW going to up the black bear kill to cut down on bear predation? The same can be asked of moose? Not from predation but from competition for food.
All of these little things contribute to the reduction of your hunting opportunities and none of them should be taken lightly. We have a situation where we question whether a herd can be rebuilt. Every little factor can help.
However, this is really dependent upon whether Maine hunters, MDIFW and the state as a whole, really think it is worth managing Northern Maine for deer. Some don’t think it is. Some believe to increase bear and moose hunting opportunities is the way to go. It’s your investment and your hunting opportunities. It’s up to you to do something about it.
Tom Remington
