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More cat stories from Ghostwalker – Lynx, Bobcat, and Snowshoe Hare

Another story that was cut from the final version of my new book Ghostwalker, Here is one about lynx and their prey, snowshoe hares.

Today was a beautiful clear day, seventeen degrees when I started out on a snowshoe trek.  I’d heard from my friend Don that while hunting up Reef Creek last October, an area closed in winter except to foot traffic, he’d seen so many snowshoe hare tracks they were like scribbles in the snow.  Most winter visitors head farther north to the Beartooth Mountains to snowmobile, so this off-limits trek is a quiet respite.  Being a north-facing slope, the road had accumulated over three feet of snow.  A recent snowstorm left the snow soft and snowshoeing was a workout.

These “reefs” are a series of layered limestone plateaus. The access road climbs along the far edge of the two benches, winding to the second reef, where a maze of old logging roads carve even higher up into the mountains. Spring through fall, this is a wet place, as hidden springs run underground, emerging through the cracks in the limestone.

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Limestone reef

With deep snow, it’s a heart workout in my snowshoes, through thick forest on both sides, to reach a sharp turn in the road where a locked gate accesses a telephone line service road. I know that after I pass this first bend, the climb steepens, hugging layered slabs of limestone cliffs on one side, with a vertical drop on the other, until I reach the second reef. Don told me this second reef was where he saw the hare runs. I’m thinking of heading there, until I see the road is blocked farther ahead by an avalanche of snow at its most narrow juncture. I decide to explore the first reef that lies beyond the access road, but while snowshoeing back down to the gate, I’m hit with an explosion of hare tracks. Snowshoe hare tracks are exciting because they are so big, and testify to how well adapted these animals are to snow-covered habitat. Their oversized hind feet are generously covered with fur, and where I’m sinking they are having a party in the snow.

snowshoe hare tracks

Snowshoe hare tracks

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What’s interesting to me is not just these tracks, but their feeding evidence. This mountain has experienced a lot of logging as well as fire activity, resulting in numerous copses of young spruce. The evidence testifies the hares are standing on their feet, chewing off the lower tips of spruce branches. Nipped twigs and gnawed off branches are strewn everywhere underneath these groves.

Several summers ago, I saw a woman juggling armloads of equipment walking to the forest across from my home. We chatted for a while, and I asked what she was doing. She told me she was an independent contractor doing a job for the Forest Service.  “I’m working on a vegetation study.”

The Forest Service, she said, was using her information to understand if this was good lynx habitat. I knew the Shoshone Forest Service was working on their twenty year management plan at that time, a massive undertaking that revisits guidelines for everything from timber to grazing, oil and gas, to wildlife issues. I asked her how her work was helping the Forest decide management for lynx; what was the connection between our local vegetation and the meat-eating lynx? The connection, it turns out, is the hare; that speedy animal that the well-adapted lynx prey on.

Lynx, being listed under the Endangered Species Act as a threatened species, needed proper consideration and protection in the Forest’s plan. It wasn’t clear exactly how this woman was measuring good habitat with her surveying equipment by tying flagging of various colors to trees.  But that conversation piqued my interest in lynx. So I’m heading up to Reef Creek on this February day to investigate—are there any lynx here along with these hares?

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Lynx

I’d occasionally seen snowshoe hare in the forest she was surveying, as well as few tracks in other locations around the valley. We also have white-tailed Jackrabbits, and their tracks are very similar in size to snowshoe hares so easily confused. Today though, this higher elevation spruce forest was clearly snowshoe hare habitat. After a few hours of exploring for tracks, the only other spoor I saw came from coyotes. With increasing access roads and snowmobiles trails, coyotes are having an easier time venturing farther into deep snow areas of the winter backcountry where snowshoes live. One theory goes that coyotes are competing with lynx for food by reducing the snowshoe population. Less snowshoe hares, less lynx.

Lynx are made for snow with their huge paws, and the Yellowstone region is at the southern tip of their historic range, which made them uncommon historically in the Park. But there have been several sightings in the last fifteen years, mostly through confirmed tracks. A set of tracks was found in 2014 near the northeast entrance, just a skip and jump over the mountains from Reef Creek. In fact, looking on the Park’s website, they have a map with some red dots indicating confirmed DNA lynx evidence. There are only two measly dots in my valley.

Truthfully, I wasn’t sure if I could tell a lynx from a large bobcat, which I’d seen many times, hanging out in trees along my driveway or hunting in the neighbor’s yard. Anecdotally I’d also heard that our mail lady, who lived here most of her life, (which immediately qualified her, in the mind of the local gossip machine, to be able to discriminate between a lynx and a bobcat) had seen a lynx at my mailbox. Maybe a case of mistaken identity, but maybe not.

bobcat tracks

Bobcat tracks

Those nipped buds and twigs, along with the large tracks, in a dense yet young spruce/fir forest, educated me about proper lynx habitat. Ten miles up my dirt road, heading west just a few miles from the Yellowstone Park boundary line, in an area that like Reef Creek had experienced burns and logging in the 1940s and 50s, has similar habitat. The following spring I looked around and sure enough, lots of snowshoe hare evidence there as well. So we have hares!

Hare populations, like other rabbit populations, run in cycles. Dr. Charles Preston at the Draper Museum, when I asked him what caused these cycles, joked that if he could figure that out he’d die happy. These boom and bust cycles regulate the rabbit populations, and with it the bobcat and lynx as well. Yet nature always throws a wrench in the works, and I’d read that in some southernmost hare populations, like the area around Yellowstone, these cycles don’t occur, but instead the hares remain stable at low densities. Maybe this might explain the persistent low population of lynx around here?

Even with all my exploring, lynx tracks weren’t forthcoming. Yet I did begin to consider the three cats that live here, their interactions, and what kinds of ‘cat fights’ might ensue. Lynx and bobcat obviously share similar food preferences. Mark Elbroch says that makes it difficult for them to share similar habitat.

“Where they share range, lynx typically stick to the higher elevations, where deeper snows give them the competitive advantage, and bobcats take control of the lowlands, where they assume the dominant role and exclude lynx through aggressive interactions.”

Elbroch also goes on to say that they occasionally hybridize. My winter explorations of the valley’s higher elevations had borne this out. Although I wasn’t seeing lynx tracks, the hares seemed to be living higher up, in densely wooded areas, whereas I knew cottontails filled the plateaus in the lower end of our valley at 6500’. Since I’d seen bobcats (and not lynx) with my own eyes, I decided to begin my quest for their tracks in winter, with the intention of understanding their habits.

bobcat

 

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