Showing posts with label martes americana. Show all posts
Showing posts with label martes americana. Show all posts

Sunday, February 4, 2018

Nature: Marten among mammals that have disappeared from Ohio

An American marten hunts in Algonquin Provincial Park in Ontario


February 4, 2018

NATURE
Jim McCormac

In the big picture, mammals don’t constitute a large segment of Ohio’s animal diversity. Fifty-six species occur in the state. Compared with birds, fish, insects or spiders, they’re a drop in the bucket.
Yet, wild, free-ranging mammals always generate excitement among observers. The thrill often seems disproportionate to their frequency. A coyote, striped skunk or white-tailed deer — all common – will nearly always grab and hold one’s eye.

Maybe we subconsciously recognize them as our distant kin in the phylum Chordata.

As a sad reflection on how the times have changed, nearly 20 percent of Ohio’s mammals that occurred at the time of European settlement are extirpated — vanquished from the state.

In the 1700s, the true wilderness of Ohio teemed with fish, fowl and various beasts. Its expansive forests, prairies and fruited plains harbored mammals that few modern Ohioans realize were part of our past.

American bison forged “buffalo trails” and ranged statewide. The last one was shot in Lawrence County in 1803, our year of statehood. Gray wolves and mountain lions were common predators, but they were shot out by the mid-1800s. Lynx roamed northern Ohio forests, but they couldn’t compete with burgeoning human populations and vanished early in our settlement era. Elk, once common and widespread, were hunted out by the 1840s.

A lesser-known animal once found here is the American marten. It, like the other vanished mammals, disappeared by the middle of the 19th century.

The marten is a fascinating carnivore belonging to the Mustelidae family, which includes minks, otters and weasels.
On a recent trip to Canada’s Algonquin Provincial Park, I finally made firsthand acquaintance with the marten. Although its range has shifted far to the north of Ohio, it remains common in the vast swath of boreal forest that blankets much of Canada and the northern U.S.
The first marten encounter was utterly serendipitous. I and a photographer friend were seeking birds in a campground when a marten dashed from cover and darted into a paper-recycling bin. We retreated to cover and waited it out in minus 2-degree cold.

Eventually the curious brute emerged from cover and offered fine looks. Martens are similar in size to a mink, but appear burlier — mildly bearlike. An adult measures about 2 feet in length. The bushy tail adds another half foot.

A hefty individual weighs about 3 pounds. Their tri-toned coloration is striking: whitish face and bib, black legs and tail, and yellowish-brown body.

We later ran across another, bolder marten foraging in the snow — it is the animal in the accompanying photo.

Martens are voracious predators, feeding mostly on small mammals such as mice and voles. But few critters up to its size or even larger are safe in the sphere of a hungry marten. They are known to take snowshoe hares — another mammal no longer found in Ohio — and these strapping bunnies can weigh 4 pounds.
Bison, martens, lynx and the other eradicated mammals I mentioned will probably never again grace Ohio’s wilds. But we can always harbor hope. Five mammal species once eliminated from the state have returned, or show signs of trying.
Black bears are now routinely seen, especially in northeastern Ohio. River otters are thriving over much of the state. A bigger relative of the marten, the fisher, has been reported several times in recent years in eastern Ohio. So has the famously prickly porcupine. And bobcats grow more common each year: There were over 500 sightings in 2017.

But for Ohio marten enthusiasts, a trip to Canada’s north woods is required.

Naturalist Jim McCormac writes a column for The Dispatch on the first, third and fifth Sundays of the month. He also writes about nature at www.jimmccormac.blogspot.com.

Thursday, January 18, 2018

American marten!!

The west entrance to one of North America's great protected wildlands, Algonquin Provincial Park in Ontario, Canada. I made a whirlwind trip here over the last week - a journey I could be writing about for some time. There were other stops, including Niagara Falls which was a mind-numbingly beautiful icy wonderland, and Lake Ontario near Toronto. There, scores of long-tailed ducks and other fowl congregated.

But it isn't everyday one gets a "life mammal", at least someone like me, who has made an effort to see mammals for a long time. So, if I post nothing else about this northern foray, I will at least share this new mammal, an extraordinary beast by any accounting.

Ontario Route 60 slices through the park, and the scenery along its entirety is stunning. There was a fair bit of snow but not that much, so getting around wasn't too tough. One mammal to watch for while driving is moose. The massive beasts are frequently seen along 60, and sometimes come to the roadside to lick salt in winter. Didn't see any on this expedition, though.

Sunday evening turned out to be crisp and clear - a frosty minus 10 F. The utter lack of light pollution in Algonquin means that night skies are bold and vibrant, and celestial bodies can be seen in a way that they no longer can in much of North America.

Photographing such a sky was irresistible so out we went into the cold. This image is a composite of 16 exposures, each made at ISO 800, 30 seconds, and f/2.8. I used my Canon 5D IV, and Canon's sensational 24mm f/1.4 lens. This lens is amazing for astrophotography, despite what more than a few "experts" on various photography Internet sites claim. The trick is to stop it down to at least f/2, and f/2.8 works better. Then, it is scarily sharp.

A true bird of the far north, the gray jay. These tame corvids were fixtures around campgrounds and anywhere that people frequented, but there are plenty more of them off the beaten path. Gray jays deal well with cold - it had been something like minus 30 F a few days prior - and routinely encounter temperatures plunging below 0 F. Biologists have been conducting research with the Algonquin birds for about three decades, and it's hard to find a jay that isn't ornamented with bands on both legs. This one had 'em, but has its feet and legs tucked in to keep them toasty.

Another denizen of the north woods and a sought after species by birders, the spruce grouse. This bird was one of three males foraging in a white spruce, and they were eventually joined by a hen. Spruce grouse specialize in feeding on the needles of spruce and pine. They are incredibly tame, which led to one of their nicknames, "fool hen". Such tameness makes them easy photo subjects - if you luck into one. When not out feeding, they often retreat into dense boughs near trunks, and you'd never know they were there.

Here it is - the American marten, the protagonist of this post! I had heard that martens were fairly plentiful in Algonquin, and not only that, they would frequent campgrounds, picnic areas and such. So, there was always a chance of at least getting glimpses of these stout weasels.

We had stopped at a picnic area with a complement of various trash and recycling bins to look for birds, when a rapid scurrying movement caught our eye. We had caught a marten unawares, and it rapidly dashed into the paper recycling bin!

I knew he/she would be back out sooner than later - they are curious beasts - so we retreated to distant cover and waited. Sure enough, it wasn't long before the triangular-faced weasel popped from his box to scan the surroundings.

After a while, the marten jumped down to the snow's surface and began snuffling about. This was awesome in the extreme, and I had secreted myself behind the forked trunk of a maple, with my camera lens poked through the fork. The mammal apparently didn't know I was there, permitting an excellent series of shots.

Martens are about the same size as a mink, but look more robust to me. An adult like this measures about two feet in length, with males being somewhat larger. The bushy tail adds another half-foot. A big one weighs around three pounds. Their tri-toned coloration is striking: whitish face and bib, black legs and tail, and yellowish-brown body.

PHOTO TIP: When shooting wary subjects - as was this marten, movements or sounds sent him scurrying back into his lair - use "silent" drive mode on your camera. It isn't truly silent, but probably cuts the sound of the shutter by half. Shooting off high-speed continuous bursts without muffling the sound will often send shy subjects fleeing, if you're close. The downside to silent drive mode is you lose several frames a second in burst mode, but that's often not a big deal, at least with slower-moving subjects.

As fantastically good fortune would have it, we found another marten, and this one was bolder. Martens are voracious carnivores, feeding on mice, voles, and even prey up to the size of snowshoe hares. But they'll eat seeds and other vegetation, and that's what this one was foraging for.

A snowy muzzle gives away the marten's feeding behavior - the hole he dug in the snow to reach the ground can be seen. While the first marten would run into hiding at the first sign of movement or noise, this one was far bolder. Here, he takes pause to scrutinize your narrator, but quickly returned to his hunting.

While martens may look cute and cuddly, a glance at their impressive set of teeth should shatter that illusion. You certainly would not want to be a small rodent and find yourself in a marten's path.

American marten (formerly pine marten) once occurred in Ohio. There are at least two specimen records from Ashtabula County, and one from Ross County. It's likely that they disappeared by 1850. By then, Ohio would have been at the southern periphery of their distribution, and it may be that most remaining animals were trapped out for their fur. Now, the southern border of the marten's range is considerably farther north and it'll be interesting to see if the range keeps contracting northward in future years.