Signs of porcupine

Porcupine den

A couple of weeks ago, Dan returned from a walk with Raven and said that they’d discovered a den. It was on the neighbour’s property about a third of the way back along our fence, visible from the fenceline. It was too dark by that point for photos, and the following day was raining, but I did manage to get out with Raven the day after that. He hadn’t been sure what it was, and given Raven’s curiosity in such things, hadn’t spent much time investigating. When I returned with Raven I made sure to have her sit and wait at a safe distance, just in case.

The den was larger than I was expecting, located halfway up a sandy bank, under the overhanging branches of a large fir. The slope had been worn down with the repeated passing of little feet, though there weren’t any obvious tracks in the soft substrate when I got closer. I’d have to look for some other clue to the identity of the owner.

Porcupine den

Fortunately, that clue wasn’t hard to find. Outside the front door, and just inside the entrance, were many dried droppings of a shape and size that I recognized immediately: the round pellet-like winter scat of a porcupine. Nearly all of them were quite old, suggesting that the den site had probably been used last winter. Whether it was being used this winter or not I wasn’t sure. As soon as the snows settle in porcupines start relieving themselves just outside the den (can you blame them? if you were all alone in your cabin in the woods, wouldn’t you just pee off the back porch instead of hiking through the snow to the outhouse, too?), but during the snow-free months, while the animal has more freedom to wander around, it’s more fastidious in its housekeeping. Normally you’re likely to encounter the pale macaroni-shaped summer scat underneath the feeding trees or in the middle of the forest floor, instead.

On occasion, when I’ve found a porcupine den before, I’ve noticed a few shed quills outside the entrance, but I didn’t see any this time. I’m not actually sure if the den is in use yet; I gather that porcupines have separate summer and winter den sites, with the latter often being at ground level and the former being in a hollow in a tree. If he hasn’t yet moved in, that would explain both the lack of fresh droppings and the absence of shed quills.

Porcupine feeding sign - snipped-off balsam fir twigs

I snapped a few photos then carried on along the fenceline, looking for a good place to hop it to cross back to our property. Along the way I passed through a grove of Balsam Fir, which we seem to have more of in the immediate vicinity of our house than any other naturally-occurring conifer (the owners had at some point planted a fair bit of spruce and pine between the house and the road as a privacy screen, but there isn’t much of it in the neighbouring woods). Eyes to the ground as I picked my way across some fallen branches, I noticed small bits of balsam twigs scattered over the forest floor beneath the trees.

Although I scanned the trees themselves and saw nothing, these are pretty clear evidence of porcupine foraging – in all likelihood, the same individual who will be using that den, come winter. I found this interesting, because it was my understanding that northern porcupines feed nearly exclusively on hemlock during the winter months, with a bit of White Pine thrown in for occasional variety. On the other hand, I noticed feeding sign on one of the tamaracks in the bog last winter, and with not too many hemlock in the immediate area, perhaps the animal was just eating what was available.

I’ll have to come back once we have some snow on the ground and see whether the den is occupied and, if so, where he’s feeding. After finding the trails of a porcupine last winter, I’ll be curious to know what this one’s home range is like.

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4 responses to “Signs of porcupine

  1. Very cool…I always thought that porky’s livedand stayed in trees to sleep, but I guess not. I have never found a den before of a porky. Thanks for sharing this.

  2. “Shed quills”…it never would have occurred to me!

  3. very interesting, thanks for taking us along…

  4. Thanks for the comments, everyone. I keep discovering signs of them around our place, and always find them fascinating creatures.

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