
North American Porcupine, Maroon Bells - Snowmass Wilderness near Aspen, Colorado
Fact: porcupines exist. I was seriously beginning to wonder. I’ve been on a quest to spot one of these elusive “quill pigs” for nearly six months. Now, I’m sure someone in Jackson Hole is rolling their eyes at this point. I can even hear their voice in my head: “Son, I had to chase off a hundred of them last night. Big as grizzly bears, every one of ‘em. Chewed right through the leather trim on my Range Rover and ate my best fly rod.” Well, fact is, porcupines are scarce around Boulder and this quest has required me to roam far and wide.
Operation Porcupine
After striking out in Castlewood Canyon, The Indian Peaks, Rocky Mountain National Park, Telluride, and a slew of other porcupine-less locales, it was time to get serious. I had heard solid reports of porcupine activity in the Maroon Bells – Snowmass Wilderness near Aspen, Colorado. On a previous quick trip I had identified lots of fresh porcupine sign, but with only a day to work in the area I came up short in locating an actual animal. I knew they were there and I that if I just spent enough time in their habitat I would have my chance to photograph one. My wife and I made a plan to backpack into the Crater Lake area and spend a few nights. Operation Porcupine was born.
Roughing it in Porcupine Country
Our original plan was to hike in on Monday, but a day of torrential rain made this plan much less appealing, so we got a hotel in Glenwood Springs and after a decent cup of coffee the next morning we hiked in and made camp at approximately 10,000’ just above Crater Lake. For the next three days this would be our basecamp for exploring the area and searching for porcupines. My wife immediately went to work on testing out our new hammock. On the other hand, I made a four mile detour to lug in the remainder of my 35lbs of camera gear. This was, after all, a photography trip, not a backpacking trip.
Introducting Our Star
The North American Porcupine (Erethizon dorsatum) is the second largest rodent in North America (the largest being the beaver), weighing up to 30 lbs. They are largely nocturnal and often spend the day sleeping a tree or in a rock den. The porcupine is covered in sharp quills, which are specially adapted hairs that it uses to defend itself against predators. Porcupines do not throw their quills, but rather when the quill is pressed downward into the skin it is released. Once a quill is embedded it may travel all the way through the body and come out the other side, which may be lethal if it intersects a vital organ. Interestingly, porcupine quills are coated in a natural antibiotic which may be an adaptation to protect the porcupine against its own quills. Porcupines are excellent tree climbers but they are also accident prone because their hunger for the most tender and nutritious parts of the tree lead them out onto the tips of branches which are prone to break. Falling from trees results in a large number of self-inflicted quill injuries, broken bones, and even deaths.
Porcupines are herbivores and the inner bark of conifers is the staple of their diet in most areas. When other grasses and food sources are available they can be found feeding on the ground. Porcupines are notorious for their salt drive, which typically peaks in early spring and again in late summer, which forces them to seek out salt anywhere they can find it – on road surfaces, in treated plywood, on automobile tires, or on sweat soaked camping gear. During the the spring and summer when porcupine diets contain higher levels of potassium and organic acids the porcupines need the extra sodium to maintain a proper balance of electrolytes. For this reason, porcupines are often viewed as pests.
For more information on porcupines, I highly recommend The North American Porcupine by Uldis Roze.
Mission Accomplished
It was our last night at Crater Lake and I was feeling frustrated and discouraged. It seemed that the next morning we would be hiking out with nothing to show for our efforts. Earlier in the day I had chatted with some backpackers who had passed a porcupine on the trail near a campsite on the west end of the lake, so this is where we decided to focus our efforts for our last night. There was certainly an abundance of sign in the area and Lana picked up several dozen quills as I worked to locate where the local resident may be denning. My best guess was beneath a large boulder not far from a tree with a very large amount of scat at its base. We decided to sit until dark and see if there was any activity around the den. We sat quietly but by 8pm the light was fading and there was nothing left to do but pack up and hike back to camp. In the middle of loading my gear back into my pack I turned to my wife to say something and that’s when I saw a big blonde ball of quills about 30 feet behind us. “Porcupine!” I exclaim in a whisper. We both become as giddy as if we’d witnessed a double rainbow. “We’re your biggest fans” my wife chimed in.
Who knows how long the porcupine had been watching us. He was probably wondering what we were doing staring at his front door, and why in the world we were collecting his hair. He munched some grass, lifted his leg and marked a couple of bushes much like a dog would, and moseyed in and out of the brush. All in all he really wasn’t that concerned about us but I guess that is a pretty natural reaction for an animal covered in spines with next to zero natural predators. Porcupines have an attitude about them that says “if you feel the need to come over here and mess with me, you do what you’ve gotta do, but I can tell you right now how that is going to work out…”
Photography was incredibly challenging in the low light. By now it was what most people would classify as “dark” out. Even with my ISO pushed to the max I could barely get a shutter speed of 1/100th – not enough to stop motion. My best shot was taken at the ridiculously slow shutter speed of 1/10th of a second when the animal paused to smell the air. I’d checked out a Nikon 200-400 f4 VR for this trip from Pro Photo Rental in Boulder and I was really amazed by the performance of the vibration reduction system. It is certainly not a light lens for backpacking, but I was really glad I made the effort to lug it out there.
After sleeping on the lumpy ground and eating bland dehydrated food on top of months of wandering around the woods examining every scraped up pine tree and wood chip filled turd it has finally paid off. Hooray for porcupines!

