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Chronology expressed using annual tree rings
Sawed Oak Tree
A fresh-sawed oak tree will show uneven growth around the circumference of a tree

One of the most read chronologies using tree rings occurs in Aldo Leopold’s book, “A Sand County Almanac,” published and first printed in 1949 by Oxford University Press.

Aldo Leopold, using a cross-cut saw, dropped a dead oak, which he used for heat.  He determined the tree had 80 annual rings, the first being laid down in 1865.  He used the date the oak died, the number of rings in the wood, and counted back to the trunk’s pith region and first ring.  These rings in the wood (xylem tissue) are laid down by a meristem (growth producing) positioned between a tree’s wood and bark.

As Aldo Leopold and his chief sawyer (probably his wife) pulled the saw’s teeth into progressively deeper rings, he noted events, many conservation-related.

Sugar Maple Slab
A slab of sugar maple made into a stool seat reveals imperfections form tapping a tree for map sap.
“It took only a few pulls of the saw to transect the few years of our ownership, during which we had learned to love and cherish this farm,” he wrote.

It should be noted that once the saw is into this circular oak trunk it quickly carries chips from the most recent rings as well as older and old rings, too.  After all, the truck, as viewed from the end of a log, is series of rings encircled by other rings.

Then the sawyers get to the exact middle (diameter) of the trunk, chips will come from all 80 of the rings during the next several pulls.  Then the reverse chronology occurs as the sawyers cut the lower half of the trunk diameter, eventually getting to the bottom and only most recent ring again as the saw completes its cut.

Rings, but not dates, again were famous when Arthur Koehler, a xylotomist (wood guy) at the US Forest Products Laboratory, Madison, Wisconsin, matched growth rings from ladder rail boards to attic floorboards, eventually resulting in convicting Bruno Richard Hauptmann of kidnapping and murdering Charles Lindbergh’s son Charles Lindbergh Jr, March 1, 1932.

The tree rings, actual years assigned to particular rings seems to put everything in perspective as one sees a ring of wood that was formed by the tree during a precise year.  As an example deer hunting backtags were first required in 1942 and then when they were discontinued (2016).  Picture this in an oak slab.

Displays of giant sequoia tree trunk slabs, some dating back 1,000s of years are impressive to say the least while seeing the actual wood formed in 1492 when ships touched the east US coastline.

A living tree, with a deer rub on one side could be cut down and examined to determine when that deer put his antlers to the trunk and scraped the bark clean to the meristem killing a portion on one side, and eliminating that portion of the tree rings.

That same technique was used to determine the year a tree was burned on one side by a fire to destroy a body of a person murdered.  A person was convicted.

Because there are variations within a ring, sometimes it is possible to pinpoint whether the meristems was injuring in winter, May or September.  That may require a razor-thin section and a microscope, but dating annual rings could be done using a chainsaw or even an axe.  A hand lens could be helpful and likely more believable when presented to a judge or jury.

Injuries to trees due to injuring the meristem between the wood and bark are most likely when tree (wood) growth is most active, June through August.  This is apparent to those who have bumped a small tree with a lawn mower.

A strong oak tree along a county road leading into Blanchardville, Wisconsin was hit by a vehicle, and the driver killed six or seven decades ago.  Want the actual date to confirm the cemetery stone being accurate?  Give me a saw and hand lens, and I may be able to say with near certainty.

Or need to know when a maple woods was last tapped for sap?  Again, “ask” a tree.  Even a buried broadhead stuck into a pine tree trunk might be able to be dated.

How about a tree injury by a bullet during the 2024 gun deer season?  That may take some doing but if it is really important ask a xylotomist and that, too may stand up in court just as Bruno Richard Hauptmann found out in 1936.  He died by electric chair at age 36.

The deer seasons are wrapping up with 315,683 deer registered; 160.728 were antlered and 154,955 antlerless.  Muzzleloader hunters registered 7,821, while 8,208 were taken during the four-day antlerless season.  During the Holiday Hunt 4,533 deer were registered.

Turkey hunters have registered 4,093 birds at this point in the fall season.  

The early, catch and release inland trout season opened January 4, 2025, will close May 2, 2025, the day before the regular trout season opens.

Spring turkey permit cards have been mailed and left over permits will be sold beginning March 17 with Zone 1.

Contact Jerry Davis, a freelance writer, at sivadjam@mhtc.net or 608.924.1112

Spring turkey seasons began 43 years ago
Tom Turkeys
There is nothing prettier than a tom turkey coming to a turkey caller, unless it is two toms.

The last Wisconsin wild turkey was detected near Darlington, Wisconsin in Lafayette County in 1881.  

Things have certainly changed with the reintroduction of wild turkeys into Wisconsin ecosystems in 1976.  

Wisconsin’s modern day spring turkey season will open for the 43th time April 16, 2025, continuing a tradition that began in 1983.  This was a mire seven years after 29 Missouri hens and gobblers were released in Wisconsin’s Vernon County; a trade that sent ruffed grouse to Missouri in trade for these and other turkey releases that followed.

Turkey hunters, birders, and photographers say the Badger State got the better of the trade, which helped put Wisconsin on the map as a turkey hunter’s destination bringing hunters, and others, from as far away as Alabama to call to these spring gobblers.

Numerous other releases and relocations have helped push the Eastern wild turkey to all 72 Wisconsin counties.

The hunt is the prize jewel for many but other traditions have answered the call, too and continue to be a big part of celebrating this reintroduction.  What has not developed yet is a Thanksgiving Day hunt for the bird as table meat, even though an autumn season is open in some zones during the annual November nine-day, gun deer season. 

Talk of making the wild turkey the state’s game bird, along with the ruffed grouse, have not yet drawn attention of Wisconsin’s legislators.

The sale of bonus authorization permits is a tradition and challenge of sorts for some hunters.  The youth turkey hunt, April 12-13 this year, is another highlight with learn-to-hunt sessions and actual mentored hunts.  

Jeff Fredrick, of Mindoro, Wisconsin may be Wisconsin’s guru turkey geek, as his answering machine proclaims.

 He hunts, paints, photographs, and makes art of what’s left after all the meat is trimmed.  The feathers become decoys and other works of art.

“The sale of bonus authorizations always got me so worked up and anxious that I scheduled my Wyoming and Montana turkey hunts to conflict with Wisconsin’s period C so I didn’t wait in line only to find out those for Period C were all sold out,” Fredrick said.  “I purchased a first season in Minnesota, got second period with my patron license, bought a Period D, and my son and daughter each have an authorization, too”.

Each year bonus authorizations are available until they are all sold.  Zone A has permits for periods D, E, and F, as does Zone 3.  Zone 2 has Period F remaining.

Licenses cost $15 and $65 for residents and nonresidents, respectively.  In addition, a turkey stamp costs $5.25, which is good for both spring and fall hunting, even though separate licenses are needed.

Generally, about 40,000 turkeys are registered each spring season.  The record number of birds; 52,880 were registered in 2008.  Compare that to 1983 when 1,200 hunters registered 182 birds during the first modern day spring season.

Turkey hunting seminars, calling contests, new clothing, calling devices, and even a challenging shotgun, the .410, and heavy shot loads have arisen, as well as turkey camps patterned after Wisconsin’s November deer camps.

Several southwest communities claim to be Wisconsin’s turkey hunting capital including Romance, Wisconsin near where the first Missouri birds flew from crates; and Boscobel, Wisconsin, a rural community that was one of the first in-person registration stations for hunters.

Wayne Smith, of Blanchardville, Wisconsin shot his first turkey during Wisconsin’s second hunt, 1984.  

“I borrowed an old slate call from a buddy, used a face paint kit, an old camouflage jacket, and a 12-gauge shotgun, not camouflaged.  I heard a gobble at about 300 yards and began calling.  The bird as I recall came in silent and I shot him and went straight to work at Madison Silo Company after that,” Smith said.  “There isn’t anything prettier than a strutting gobbler coming in to your calls.  It’s a lot like deer hunting but there you hope someone sends a deer your way.  In turkey hunting you are coaxing the gobble to come to you.”

Fredrick believes he was fortunate growing up with the new game in town at that time.  “We knew very little about spring turkey hunting,” he said.

“My father is a taxidermist and he used to sponsor a class for area taxidermists to learn mounting techniques.  One of the instructors was from the South and I’d listen to him tell stories about turkey hunting, which got me interested and started.”

Fredrick believes his growing up with turkey hunting starting in Wisconsin gave him a perspective few people ever experienced and never will in the future.

Doug Williams, at D W Sports Center in Portage believes turkey hunting has become a way of life for some hunters.  “There is nothing like a gobbler gobbling, the woods coming to life in spring, and all the different animals and plants coming back from dormancy of just surviving winter.”

It’s just a great day to be alive and in the woods, many an old-timer and first-time hunters say.


Contact Jerry Davis, a freelance writer at sivadjam@mhtc.net or 608.924.1112