Posts tagged ‘snow’

Snowshoe Hare pair…one brown, one white—March 26th; Sax-Zim Bog, Minnesota

Deep in a Black Spruce/Tamarack bog on March 26th I encountered something quite amazing…and entirely new for me—A pair of courting Snowshoe Hares…one already turning brown (though there was about a foot of snow on the ground) and one still mostly white. This was in northeastern Minnesota’s Sax-Zim Bog.

I was just standing quietly and listening for birds, when I caught some motion out of the corner of my eye. It was these two hares chasing each other around the trunk of a spruce! They’d run at each other and then one would leap over the other one, stop momentarily and then continue their cavorting chase. They continued for a couple minutes but then they noticed me and stopped. They froze in position for about 20 minutes, but then again continued their courtship.
Snowshoe Hare pair leaping Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0725

Cavorting Snowshoe Hares in late March are probably courting. Their color has nothing to do with their sex…Some hares just turn brown earlier than others in spring. But turning brown in late March/early April can be a problem if the snowpack lingers late into April. They become easier to spot by predators such as Canada Lynx and wolves.

[Snowshoe Hare in Minnesota’s Sax-Zim Bog; March 26, 2018]

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0865

One hare was farther along in its molt from winter white to summer brown. This change is brought on by increasing day length, and NOT by whether there is snow on the ground or not.

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0839

Snowshoe Hares are normally crepuscular (more active at dawn/dusk) and nocturnal and can therefore avoid some diurnal hunters. Lynx and Northern Goshawks (females) are two of their historic predators.

[Snowshoe Hare in Minnesota’s Sax-Zim Bog; March 26, 2018]

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0837

Snowshoe Hares tend to be on a 10-year boom-bust cycle, but this is more regular in the heart of their range in Canada and Alaska. Minnesota is at the south end of the range and the cycle here is not as regular.

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0836

Freezing in place is a good strategy to avoid being noticed by predators….But they also think they are invisible to this photographer. Every Snowshoe Hare I’ve found in winter has used this method and I’ve been able to slowly get quite close to them.

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0833

Hares in winter feed on the inner bark and buds of  shrubs and small trees.

[Snowshoe Hare in Minnesota’s Sax-Zim Bog; March 26, 2018]

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0821

Surprisingly, Snowshoe Hares can have between 2 and 5 litters each year! Each litter can be from 1 to 8 leverets (young hares).

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0817

White pelage is a big help to Snowshoe Hares in remaining invisible during the snowy season.

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0811Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0801

I love the mix of colors in the pelage of the molting Snowshoe Hare.

[Snowshoe Hare in Minnesota’s Sax-Zim Bog; March 26, 2018]

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0788Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0786Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0775

It takes about a month for a Snowshoe Hare to turn from white to brown in spring (mostly April) and from brown to white in fall (mostly November).

[Snowshoe Hare in Minnesota’s Sax-Zim Bog; March 26, 2018]

Snowshoe Hare Warren Nelson Memorial Bog Sax-Zim Bog MN IMG_0710-2

[Snowshoe Hare in Minnesota’s Sax-Zim Bog; March 26, 2018]

[**All photos with Canon 7D and Sigma 50-500mm lens]

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Snowy Owls & other birds—Glacial Ridge NWR March 9-10

Last week I posted photos of the amazing hoarfrost that greeted me at sunrise in northwest Minnesota’s Polk County on Friday March 9th. This time we will concentrate on the wildlife I saw over these 2 days (actually 1 1/2 days). Most of my time was spent in the 57 square mile Glacial Ridge National Wildlife Refuge east of Crookston, Minnesota. It is Minnesota’s newest National Wildlife Refuge, established in 2004.

My main purpose for this trip to far northwest Minnesota was picking up a pallet of books in Pembina, North Dakota, but my photographic goal was to get slow-motion video of a Snowy Owl in flight. I ended up having six sightings of FOUR different Snowy Owls….A success even without getting any video.

Snowy Owl in Glacial Ridge National Wildlife Refuge. I saw 3 different Snowies in the western part of the refuge. Unfortunately all were sitting on telephone poles…Not the most photogenic perch. But my goal was slow-motion video of Snowy Owls in flight….but most were just patiently watching the landscape for any mammalian movement.

[Canon 7D with Canon 400mm f5.6 lens; 1/800 sec. at f9; ISO 100; hand-held]

Three Sharp-tailed Grouse in the frosty landscape of western Minnesota.

This gal (?) was the most tolerant of the four Snowy Owls I saw over the two days. But unfortunately she was sitting right above a busy highway in Kittson County and a State Trooper urged me to move on. I asked for a few minutes longer and he said that was fine. But I could have spent a couple hours with this beautiful owl. I did get video of it stretching and fluffing its feathers.

Kittson County is the extreme northwest county in Minnesota. It is a LONG WAYS from anything! In fact, Kim Eckert claims that if you were in Minneapolis and wanted to get here, it would be faster to fly to Winnipeg, Manitoba, Canada and then drive southeast to Kittson County than to drive here from the Twin Cities!

[Sony A6500 with Sigma 50-500mm f4.5-6.2 OS HSM lens; 1/640 sec. at f10; ISO 100; tripod]

Excavating a nest cavity or just feeding? Hard to tell but this female Pileated Woodpecker (no red mustache and the red on the head doesn’t reach the bill) was busy chiseling away at a very oval hole.

[Canon 7D with Canon 400mm f5.6 lens; 1/1000 sec. at f5.6; ISO 1600; +1.33 ev; braced on car window frame]

Rough-legged Hawk taking flight from the railroad tracks bisecting Glacial Ridge NWR. I  really think the Roughleg is one of the most beautiful buteo hawks in North America. They nest on the tundra of northern Canada and Alaska but spend the winter in southern Canada and the northern U.S. Their tiny bill and feet are perfect for feeding on small rodents, especially voles and lemmings.

[Canon 7D with Canon 400mm f5.6 lens; 1/1000 sec. at f5.6; ISO 1600; +1.66 ev; braced on car window frame]

Finally! A Snowy Owl on an eye-level and photogenic perch! But alas, it was about a half mile away. Let’s call these “bird in the landscape” photos. I actually think they would look pretty cool printed large (like 4 feet wide!).

[Canon 7D with Canon 400mm f5.6 lens; 1/800 sec. at f9; ISO 100; tripod]

Sparky in the Polk County, Minnesota portion of the Pine to Prairie Birding Trail on a gorgeous late winter day.

Very small and very white Snowy Owl (so likely a male) atop very large power pole just outside Glacial Ridge NWR. The day before he was in the refuge, and hunting from a smaller power pole.

Coyote hunting in northwest Minnesota’s aspen parkland.

Note the beautiful barring on the breast and belly of this Greater Prairie Chicken. Glacial Ridge is a real stronghold for this prairie species in Minnesota. I (conservatively) saw 28 prairie chickens on Saturday March 10 in Glacial Ridge.

Rough-legged Hawks were mostly absent from NE Minnesota this winter, but there were good numbers at Glacial Ridge on this weekend. I saw 15 in just the eastern part of the refuge in one morning.

[Canon 7D with Canon 400mm f5.6 lens; 1/1000 sec. at f6.3; ISO 640; +1.66 ev; hand-held]

Both Sharp-tailed Grouse (pictured above) and Greater Prairie Chickens were feeding along the railroad tracks that bisect Glacial Ridge National Wildlife Refuge. Maybe there is spilled grain along the tracks. I saw a total of 48 Sharptails in the refuge on March 10th.

Either Sharp-tailed Grouse or Greater Prairie Chicken tracks in the snow.

 

[Canon 7D with Canon 400mm f5.6 lens; 1/1000 sec. at f5.6; ISO 320; +1.66 ev; hand-held]

Snow Buntings were beginning to head north to their tundra breeding grounds in northern Canada. I saw many flocks along US75 between Crookston and the North Dakota border near Canada…441 total with one flock totaling about 150 birds. But this Snow Bunting was all alone and I saw him on two consecutive days along the same stretch of deserted road. I even got video of him feeding on plant seeds that were peaking above the crusty snow.

[Sony A6500 with Sigma 50-500mm f4.5-6.2 OS HSM lens; 1/1000 sec. at f10; ISO 320; hand-held]

Fenceline border between private and public lands adjacent to Glacial Ridge NWR.

Pair of Bald Eagles…The Bald Eagles are beginning to think about nesting in far NW Minnesota. I saw two pairs that were actually IN/AT THE NEST already…even though there was no open water anywhere around. This duo at Glacial Ridge was actually an adult and immature.

BIRD HIGHLIGHTS

NW MN trip

March 9-10, 2018

Between Crookston and St. Vincent in Kittson County along US75

441 Snow Buntings

373 Horned Larks

Glacial Ridge NWR (March 9 and 10)

15 Rough-legged Hawks

48 Sharp-tailed Grouse

28 Greater Prairie Chickens

3 Snowy Owls (CR446 mainly)…including a very white and little male

1 Pileated Woodpecker

Snowy Owl along US75 at milepost 379.5 just south of Kennedy in Kittson County (March 9)

Meadowlark sp. near Lake Bronson in Kittson County (March 9) (spring migrant)

3 Bald Eagle nests with pairs occupying nest (Polk and Kittson Counties)

Hoar Frost Morning—Glacial Ridge National Wildlife Refuge-March 9-10

There were 20 cases of books waiting for me in Pembina, North Dakota. My printer is in Altona, Manitoba and they kindly brought a pallet of books just across the U.S. border so I wouldn’t have to pay duty. And since I was going all the way there, why not do some photography on the way?!

I left Wrenshall at 3:20 am so I could be in far western Minnesota by sunrise. And I made it! Since the radio in the van doesn’t work, podcasts keep me entertained. As I turned off US2 into Glacial Ridge National Wildlife Refuge, I knew it was going to be a spectacular morning. Thick coats of hoarfrost coated everything! Every twig, branch, blade of grass, strand of barbed wire held a coating of thick feathery frost.

Glacial Ridge National Wildlife Refuge was established in 2004 and is Minnesota’s newest addition to the NWR system. It is a vast area, that will eventually encompass 37,000 acres (57 square miles)

It is described by the US Fish and Wildlife Service as “the largest tallgrass prairie and wetland restoration project in U.S. history.” [from wikipedia.com]

 

Conditions were PERFECT for hoarfrost formation….Temperatures at sunrise were near ZERO degrees F and dead calm, and the day before had been above freezing so I imagine moisture from the melting snow provided the “raw material” for spectacular hoarfrost formation.

Here is some info from http://www.wikipedia.org:

“Hoar frost (also hoarfrost, radiation frost, or pruina) refers to white ice crystals deposited on the ground or loosely attached to exposed objects, such as wires or leaves.[4] They form on cold, clear nights when conditions are such that heat radiates out to the open air faster than it can be replaced from nearby sources, such as wind or warm objects. Under suitable circumstances, objects cool to below the frost point[5] of the surrounding air, well below the freezing point of water. Such freezing may be promoted by effects such as flood frost or frost pocket.[6] These occur when ground-level radiation loses cool air until it flows downhill and accumulates in pockets of very cold air in valleys and hollows. Hoar frost may freeze in such low-lying cold air even when the air temperature a few feet above ground is well above freezing.

The word hoar comes from an Old English adjective that means “showing signs of old age”. In this context, it refers to the frost that makes trees and bushes look like white hair.

Hoar frost may have different names depending on where it forms:

  • Air hoar is a deposit of hoar frost on objects above the surface, such as tree branches, plant stems, and wires.”

[Sony A6500 with Sigma 50-500mm f4.5-6.2 OS HSM lens]

Sharp-tailed Grouse in frosty meadow. I ended up seeing 48 Sharp-tails in Glacial Ridge on Saturday.

[Sony A6500 with Sigma 50-500mm f4.5-6.2 OS HSM lens]

 

Hoarfrost on barbed wire fence.

[Sony A6500 with Sigma 50-500mm f4.5-6.2 OS HSM lens]

 

Cottonwoods on the edge of the prairie.

[Sony A6500 with Rokinon 10mm manual lens]

 

Coyote in frosty meadow. I tried squeaking and pishing to bring her closer, and it worked…kind of. She came back towards me, but only within about 200 yards.

Yellowstone 2017 #3—Black Bears to Mountain Bluebirds (Late April)

Bison and three calves Yellowstone National Park WY -04779

No…Not a Bison cow with triplets…Just two playful “red dog” calves coming over to play with her nursing calf. The Bison were just dropping their calves in late April.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/160 at f5.6; ISO 100; tripod]

Mountain Bluebird on shrub in snowy background Yellowstone National Park WY -04846

Snow greeted us as we pulled in to the Mammoth Campground in Yellowstone after driving all night from Duluth. But as we waited for someone to vacate the campground so we could pick a spot, this male Mountain Bluebird entertained us by foraging near the gate.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/320 at f6.3; ISO 100; handheld]

Mountain Bluebird on pine in snowy background Yellowstone National Park WY -04865

Mountain Bluebird male

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/800 at f5.6; ISO 100; handheld]

Woodchuck Groundhog Yellowstone National Park WY -0782

Yellow-bellied Marmot surveys his “kingdom” in Yellowstone.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/250 at f5.6; ISO 100; tripod]

Woodchuck Groundhog Yellowstone National Park WY -06406

Yellow-bellied Marmot. I like how the shade of the mountain slope in the background becomes a beautiful blue blur.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/500 at f5.6; ISO 200; tripod]

Elk pair Yellowstone National Park WY -6567

Elk pair; His breath visible in the cool morning air.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/640 at f5.6; ISO 320; handheld]

Harlequin Duck pair on log Madison River Yellowstone National Park WY -05557

We were bummed that the road that leads to LeHardy Rapids was still snowed in. This is the traditional hotspot for Harlequin Ducks. But fortunately we spotted this colorful pair along the Madison River.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/400 at f7.1; ISO 800; tripod]

Harlequin Duck male back on log Madison River Yellowstone National Park WY -05535

Harlequin Duck male spreads his tail feathers after preening. Yellowstone is the southernmost breeding site for this species in all of North America! The main part of their breeding range includes British Columbia, Alaska, Yukon and Labrador. They prefer to nest along fast-flowing mountain rivers.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/250 at f6.3; ISO 400; tripod]

Harlequin Duck male front on log Madison River Yellowstone National Park WY -05505

Harlequin Duck male

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/100 at f6.3; ISO 100; tripod]

Harlequin Duck male on lichen-covered rock Madison River Yellowstone National Park WY -05303

Harlequin’s love fast water…the more turbulent the better! They dive underwater in rapids to feed.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/500 at f5.6; ISO 200; tripod]

Bison herd along Madison River Yellowstone National Park WY -05200

Bison herd along the Madison River.

[Sony A6500 with Canon 18-55mm f3.5-5.6 lens at 18mm; (Metabones adapter); 1/400 at f6.3; ISO 160; tripod]

Beaver along shore snow Yellowstone National Park WY -05144

Beaver having a late afternoon snack.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/200 at f7.1; ISO 1600; handheld]

Black Bear and brown cub Yellowstone National Park WY -05072

Sow Black Bear and one of her two tiny cubs. I got some nice video of this trio, which I will include in a future post.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/320 at f8; ISO 400; tripod]

Bison and red dog calf Yellowstone National Park WY -05030

Bison and her “red dog” calf.

Bighorn ewe Yellowstone National Park WY -04896

We ran across a band of Bighorn ewes near Yellowstone Picnic area.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/400 at f5.6; ISO 100; tripod]

Black-billed Magpie trio on rocks in snow Yellowstone National Park WY -04872

A trio of Black-billed Magpies wait out a snow squall near Mammoth.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/60 at f13; ISO 100; braced on car window]

 

A Winter Drive through Carlton County

WHITE ON BLUE
On a sunny but very cold day in late February, I traveled out to western Carlton County in search of a Snowy Owl that had been reported there earlier in the month. I live in the NE corner of Carlton County just south of Duluth, Minnesota. I knew the odds of finding the owl were not in my favor but it was an excuse to see a part of the county I don’t usually traverse. The theme seemed to be “white on blue” with many white birds showing themselves (and a white church!), all on a backdrop of white snow, blue sky and deep blue shadows.

Rough-legged Hawk flying blue sky Finn Road Carlton Co MN IMG_5355A beautiful Rough-legged Hawk flew up from a field along Finn Road.
It was likely hunting voles, their favorite meal. Though they are nearly as large as a Red-tailed Hawk, they have much smaller talons and a relatively tiny beak for grabbing and eating small rodents. Red-tails on the other hand, can easily take large prey such as cottontail rabbits and so need the larger “equipment.”
This individual’s incomplete belly band tells me that this is an adult male…Females and immatures have a broad black belly band.
They nest in the arctic but move south in winter in search of daylight and small rodents. Minnesota is their “Arctic Riviera.”

Snow Bunting flock CR27 Carlton Co MN IMG_5442

Snow Bunting flock CR27 Carlton Co MN IMG_5430

Snow Bunting flock CR27 Carlton Co MN IMG_5460A DRIFT OF SNOW BUNTINGS
Another visitor from the arctic tundra that makes the northern states its winter home is the Snow Bunting. Flocks of these “snowbirds” feed on weed seeds along roads and railroad tracks and in farm fields. This flock was foraging actively but flew every time I tried to get close. This, unfortunately for the photographer, is the norm for this species.

Hoary Redpoll and Common Redpoll flock Carlton Co MN IMG_5410HOARY SURPRISE
Surprising was a lone Hoary Redpoll feeding with a flock of Common Redpolls along a country road. Hoaries and Commons are two more species that breed in the north of Canada and Alaska but winter in northern Minnesota. They are an irruptive species (like the Rough-leg above) which means that they move south in varying numbers from year to year depending on the supply of food in the north…Alder catkins and birch seeds for redpolls, and voles for Rough-legged Hawks. We are thrilled to have so many redpolls this year!
Hoaries are much rarer, averaging 1 for every 100 Commons. Note her (males would have a pinkish breast) very frosty white coloration and tiny cone-shaped bill (compared to the longer sharper bill on the Common behind her.)

Suomalainen Kirkko E.L.K. 1915 Autumba Carlton Co MN IMG_5330

Suomalainen Kirkko E.L.K. 1915 Autumba Carlton Co MN IMG_5335

Suomalainen Kirkko E.L.K. 1915 Autumba Carlton Co MN IMG_5352SUOMALAINEN KIRKKO
This old Finnish Lutheran church (Suomalainen Kirkko = Finnish Church) from 1915 was saved after its doors were closed. It was moved to this location near Hwy 73 and turned into a cultural center. I love the stark white and simple lines of this vernacular architectural gem.

I drove 95 miles and had a great time.
P.S. I did not find the Snowy Owl

Video of my Bobcat Encounter

Finally finished editing my video of a Bobcat in Carlton County in northern Minnesota. See the previous post for photos from this once-in-a-lifetime encounter at a friend’s cabin. I said it before, and I’ll say it again…truly a beautiful cat! Enjoy!

Pretty Kitty—Carlton County Bobcat

It is good to have a network of friends, and for many reasons—Friends you shoot with, friends who can give you critique and feedback, and friends who give you tips on wildlife locations. And my buddy Gene helped me with the latter. I think the text said something like “the bobcat came back this morning” This was monumental news! How could he state that so nonchalantly? I called him immediately and was set up on his property in a remote part of Carlton County, Minnesota the next day. A mere 25 minute drive from my house, I got there just after sunrise.
On the way up his long winding drive, a movement caught my eye. A winter-white Snowshoe Hare had hopped a few yards but was now sitting motionless. Too bad the Bobcat hadn’t seen this tasty meal. Witnessing a chase scene would have been a once-in-a-lifetime treat.

Bobcat Lynx rufus Carlton Co MN IMG_3429 1024pxAfter about 45 minutes of sitting quietly, it was an unbelievable thrill when Gene whispered, “Here she comes.” (We’ll call her “she” as her size seems small and features delicate…Plus, what a pretty face!). She cautiously slipped between the hazel brush, slinking her way towards the road-killed deer that Gene had provided.

Bobcat Lynx rufus Carlton Co MN IMG_3390 1024pxSensing her surroundings with acute hearing and smell and vision, she crept closer, occasionally stopping to sit and relax, making sure the coast was clear. In the nearly 3 hours we sat there, she came in about four times, but retreating after a few minutes.

Bobcat Lynx rufus Carlton Co MN IMG_3339 1024pxBobcats have increased in Minnesota over the last few decades. In an article titled “Bountiful Bobcats” in the Minnesota Conservation Volunteer Jan/Feb 2014, the author quotes “From the 1970s up to about 2000, bobcat population numbers were fairly low and stable, according to John Erb, furbearer biologist for the Department of Natural Resources. But starting around 2000, the bobcat population increased rapidly. It grew for about eight years and now appears to be stabilized at about 5,200 in spring and 8,200 in fall. (That’s well above the levels observed from 1977 to 1997—about 1,700 in spring and 2,300 in fall.) Erb and other wildlife managers hope to better understand the causes and potential implications of this bobcat resurgence.” See the entire article here

Snowshoe Hare Gene Letty's homestead CR104 Carlton Co MN IMG_3279Snowshoe Hare that greeted me on my way into Gene’s cabin…A rare sight!

Bobcat Lynx rufus Carlton Co MN IMG_3373 1024pxThe Volunteer article goes on to say, “An adult is roughly 3 feet long including its short, “bobbed” 4- to 7-inch tail. Adult males, or toms, can weigh more than 30 pounds and occasionally over 40. Adult females usually weigh 20 to 25 pounds.”

Bobcat Lynx rufus Carlton Co MN IMG_3414 1024pxWhy are they increasing? John Erb is the MN DNR’s furbearer biologist…”Erb suspects multiple reasons for the recent bobcat population explosion, although he stresses the need for more research to winnow out the causes. One possible factor is the changing climate. Minnesota is at the northern extent of bobcat distribution in North America. Bobcats are less efficient deep-snow predators than are Canada lynx, which have thicker fur, longer legs, and oversized paws.”

“Milder winters might be aiding survival rates, particularly for younger animals,” Erb says. “Female bobcats might also be coming through winter in better condition, so they might be having better reproductive output and survival of kittens.”

“Forest management could also be playing a role. Erb says disturbed and younger forests often provide dense cover and abundant edge habitat, which bobcats and some of their prey prefer. He believes this habitat has expanded due to increased logging that began in the mid-1980s, accelerated in the early 1990s, and continued until recent years. He points to a similar pattern of young forests, plentiful deer, and booming bobcat populations in the 1940s and ’50s, following turn-of-the-century logging, fires, and other forest disturbances.” From the article by Jacob Edson “Bountiful Bobcats” in the Minnesota Conservation Volunteer, Jan/Feb 2014

Bobcat Lynx rufus Carlton Co MN IMG_3376 1024px“Another factor that could be affecting bobcat populations is the increase in deer and turkey populations. Bobcats prey on deer, particularly fawns, and scavenge on dead deer, especially during winter.” Surprisingly, Bobcats are also able to take down adult deer.

Bobcat Lynx rufus Carlton Co MN IMG_3434 1024pxOne researcher has also noted that Fishers are declining in the core Bobcat range in Minnesota. Is it because they are competing for some of the same prey? Bobcats will also kill adult Fishers.

Bobcat Lynx rufus Carlton Co MN IMG_3528 1024pxForested parts of Minnesota may harbor one Bobcat per six to seven square miles. Lynx, which are better adapted to deep snow, replace Bobcats in the Arrowhead region.

Bobcat Lynx rufus Carlton Co MN IMG_3440 1024pxThis fact really surprised me. Did you know that Lynx on average weigh less than Bobcats? They rarely top 25 pounds while Bobcat Toms can top 40 pounds! It is the very long legs and large feet of a Lynx that gives us the impression of a larger animal.

Bobcat Lynx rufus Carlton Co MN IMG_3306 1024px

Bobcat Lynx rufus Carlton Co MN IMG_3530 1024pxFeeding daily on this carcass for nearly a week, she still is cautious when approaching her “prize.”

Bobcat Lynx rufus Carlton Co MN IMG_3422 1024pxI’ll post a video of her in the next blog post.

[Most images shot under low light with heavy overcast skies; Canon 7D with Canon 400mm f5.6 lens; f5.6 at 1/250 second at ISO 1000. Firmly locked on tripod!]

[The two images of the Bobcat actually feeding at the deer carcass were taken at f5.6 at 1/160 second at ISO 1600]