Something to think about

S

scoutdog5

Guest
Shown below is a comparison between Oregon and Colorado regarding mule deer populations, hunter numbers, etc. It would be interesting to compare Colorado and Utah, but I don't know where to get the Utah stats. Any help with that would be appreciated.

Something to Think About


Prior to the 1999 hunting season, Colorado went to a complete limited entry system for mule deer hunting. The action was taken due to significant drops in deer populations, buck ratios and fawn ratios from 1970 through 1998. Some statistics:

Management Objective for Deer: 630,000

Average number of hunters 1980 through 1998: 185,300
Average harvest 1980 through 1998: 64,000
Estimated Deer population 1998: 475,000
Estimated Buck Ratio 1998: 10-20/100 does

Average number of hunters 1999 through 2005: 84,400
Average harvest 1999 through 2005: 36,600
Estimated Mule Deer population 2006: 210,000
Estimated Buck Ratio 2005: 39/100 does


Oregon has maintained the same basic structure for mule deer hunting for many years. All rifle tags are limited entry, most units are over the counter for archery. Virtually no antlerless tags except for some private land damage hunts.
Management Objective for Mule Deer: 347,700 (revised down from 366,600 in 2005)
Number of hunters 1998: 91,592
Harvest 1998: 36,735
Estimated Mule Deer Population 1998: 250,000 (estimated)
Estimated Buck Ratio 1999: 17/100 does

Number of hunters 2006: 74,257
Harvest 2006: 24,136
Estimated Mule Deer Population 2006: 237,500
Estimated Buck Ratio 2006: 18/100 does

Observations

1. Colorado was in the same boat as the rest of the Mule Deer states, decreasing mule deer herds, low buck/doe ratios, and lower fawn survival and recruitment levels in most parts of the state. In 1999, they dramatically reduced antlered deer hunting/harvest, and are currently the only Mule Deer state with an increasing mule deer population that is approaching management objective.
2. Oregon has a deer population that is 39% that of Colorado, yet issued 88% as many tags as Colorado.
3. As a percentage of the population, Colorado issued one tag for every 7.2 deer, Oregon issued one tag for every 3.2 deer.
4. Colorado had approximately 128,000 bucks in the winter 2006 deer population. Oregon had approximately 28,000 bucks in the winter 2006 deer population. Assuming 40 fawns per 100 does survive to the next hunting season, Colorado had approximately 180,000 bucks during the 2007 season, and issued approximately 75,000 buck tags. 38% of the bucks were 1.5 years of age. Using the same assumptions, Oregon had approximately 55,000 bucks during the 2007 season, and issued approximately 68,000 buck tags. 55% of the bucks were 1.5 years of age.
5. Of the Northern tier mule deer states (Oregon, Washington, Idaho, Montana, Utah, Colorado and Wyoming), Colorado is the only state which is actively managing their mule deer herds to provide substantial numbers of mature bucks after the hunting season. They are also the only state with an increasing mule deer population, one that is approaching management objective.

Scoutdog
 
Interesting read.

You had one typo: "Estimated Mule Deer population 2006: 210,000"

Should be 610,000 deer.

txhunter58

venor, ergo sum (I hunt, therefore I am)
 
LAST EDITED ON Feb-27-08 AT 12:17PM (MST)[p]Utah looks something like this for 2006:
Mule Deer Population: 318,000
Population Objective: 411,000
Hunters: 88,452
Harvest: 30,548
Success Rate: 35%
Buck/Doe ratio: approx 21 bucks per 100 doe
Doe/Fawn ratio: 66 fawns per 100 doe

In 1992, 228,000 hunters harvested 70,000 deer.
In 1994, 90,000 hunters harvested 30,000 deer.

The Colorado unit I hunted last year had 2 (Yes TWO) mature bucks per 100 doe.

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www.sagebasin.com
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>One interesting note is I was
>told by a Colorado Biologist
>that Colorado figures buck fawns
>into their buck to doe
>ratio counts.

The biologist was incorrect, Packout.
 
You need to look at more then just tag numbers to be able to compare the success or lack of success of a states managment plan. Colorado is doing something right but tag numbers may not be the cause.


I.E It could be that fawn survival rates is the key more then the number of tags given out. The number of mature bucks is part of the fawn survival rate equation but that part of the equation has little to no affect once you reach a fairly low buck to doe ratio. Habitat and doe health is another part of fawn survival rates who's affects don't decrease as they improve.
 
LAST EDITED ON Feb-27-08 AT 12:17PM (MST)[p]Colorado- Thanks for the input. I thought it didn't add up (using half the fawns as bucks in the ratio), but she was adamant that is how they counted. Thanks for the correction and I edited my post.

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www.sagebasin.com
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Interestingly enough, Utah and Oregon both had higher fawn survival rates than Colorado, at least in 2006. In the case of Oregon and Colorado, this count is done in late fall, after hunting season, but before winter really cranks up. I assume the stats shown above for Utah are collected in the same time frame, but don't know that to be true.

There is a typo in the stats above, which made it difficult to see the point I was trying to make. Here are the corrected stats:

Colorado Deer Population in 1998: 475,000
Colorado Deer Population in 2006: 610,000

That is a 28% percent increase in 8 years.

Since the long gradual decline in mule deer populations began in the early 80's, Colorado is the only Northern Tier state to successfully turn things around, and actually have an increasing mule deer population that approaches their management objectives.

My point is NOT that every state should copy Colorado. I do believe, however, that states such as Oregon and Utah should be re-evaluating their management practices as related to mule deer, carefully study the Colorado approach, then develop a new management plan that fits their state, with the idea of finally reversing the downward trend in deer numbers. Unfortuantely, this is certainly not happening in Oregon, or Utah as far as I know. I did read Idaho's proposed plan, and there were a lot of good things in it, but they seemed to rely on obtaining additional funding from the State and Feds to put most of it in place, and that is a pipe dream, at least at the federal level. It will be interesting to watch what happens there over the next five years.

Scoutdog
 
Right On Dude ! I appreciate the time you took to put this together .You obviously care !
Not going to critique the stats .I know you are just trying to get us thinking and talking .
 
I went to my first RAC Meeting in Springville a back in November. There was talk about splitting up into lots of small micro units like CO does. Does anyone know if this is still a possibility or was it shelved?

There's been talk for a couple of years on it...think it'd be a great idea.
 
LAST EDITED ON Feb-28-08 AT 09:06AM (MST)[p]>Interestingly enough, Utah and Oregon both
>had higher fawn survival rates
>than Colorado, at least in
>2006.
>
>
>Scoutdog


That is interesting.

Utah is looking at breaking the rifle deer hunt up into 25 units but I don't think that will affect the health of the deer herd much. Ironiclly I do think the good moisture this winter will help the deer herd because there will be more moisture in the ground. Particulary if this trend continues through-out the year.
 

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