[A note about last month’s post: you may have gotten a belated notification of the June blog; if so, my apologies. I had some trouble with my website, and the messages didn’t go out until the problem was fixed.]
Imagine you’re hiking on a sandy forest road, checking all the good spots for tracks. Suddenly you’re surprised to see what appear to be the barefoot tracks of a person. Could someone have been walking around way out here without shoes on? But as you look again, you realize that there’s something odd about the prints. Instead of the big toe being on the inside of the foot, it’s the outside toes which are larger and positioned farther forward. In fact, the big toe isn’t really very big. And ahead of each toe there’s the unmistakable mark of a claw. These tracks belong to a different creature altogether–a bear.
The black bear (the only bear we have in the east) that made the tracks above was moving at an indirect register walk, placing each rear foot on the spot just vacated by the front foot from the same side. The zig-zag pattern matches the pattern made by a walking person, but it’s a messy zig-zag because the coverage of the front prints by the hind ones isn’t precise. That’s a sure clue that the trail was made by a four-footed creature.
Another kind of movement often used by bears is the overstep walk, a gait in which the rear foot comes down just ahead of the front foot on the same side. In the next photo a bear moved from bottom to top at an overstep walk, leaving a sequence of tracks made up of sets of two. Each set is composed of a hind track trailed by a front track, and the pairs of tracks are arranged in the familiar zig-zag of a walking gait. Starting from the bottom, the sequence of tracks is: left front, left rear, right front, right rear, left front, left rear.
In the next image you see a left front and a left rear print taken from an overstep walk sequence. The direction of travel is toward the right, and the rear print with its fully impressed heel looks larger–and more human–than the heel-less front track behind it. In both front and rear tracks the outer toe (the upper one) is slightly larger than the others, but compared to human tracks the difference in size is less pronounced. The inner toes shows nicely in both tracks, and they’re distinctly smaller than the rest. There are a few claw marks, but they’re not easy to find because they’re not exactly in front of the corresponding toes.
Bears are classified as plantigrade creatures, meaning that their heels often touch the ground when they are moving at a normal walk. I’m hedging a bit here because heel registration in bears is variable. Rear tracks may show complete and well connected heels, as in the photo above, or partial heel impressions as in the upper sets of tracks in the preceding photo. And if you look at the first photo you’ll see heel marks that are separated from the middle pads by ridges.
Front prints commonly lack heel impressions, but there are times when the full length of the front foot, from heel to toes, does register in the track. The right front track in the next photo (direction of travel toward the left) is a good illustration. The middle pad forms a broad, slightly curved depression in the center of the photo. To the left the four largest toes and their claws show as clear imprints, but the smaller fifth toe (which would have been toward the bottom of the photo) didn’t touch firmly enough to register. To the right of the middle pad there’s a separated circular impression made by the heel pad.
Female bears which bore young over the winter are now travelling with their offspring and leaving tracks like the ones in the next photo. At the lower left you can see the mother’s print. The more delicate prints of the cub, with their prominent claws, are above and to the right. Young bears are active and playful, but they are also vulnerable to predation by coyotes, bobcats, and even adult male bears. Those sharp claws allow cubs to climb to safe refuges high in trees.
Bears are constantly on the move to access a variety of seasonally abundant food sources, often travelling miles as wild fruits and nuts ripen, colonial insects become available, or crop plants mature. Wherever they cross silt beds, sandbars, muddy forest roads, or other trackable surfaces they may leave prints for us to find. So when you find tracks that bear an uncanny resemblance to human tracks, look again. You may be on the trail of a roaming bruin.