An online resource based on the award-winning nature guide

Tracks

Mystery Photo

2-4-16 mystery photo 010Who made these tracks? Hint: Just as one sometimes reads between the lines to understand the real message that is being relayed, it can be helpful to observe the space in between tracks for additional information. (Please post answers under “Comments.”)

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American Crow Bills Used As Tools

1-13-16  American crow tracks 147American crows obtain most of their food on the ground as they walk along in search of seeds, insects, frogs, snakes, bird nests and small mammals. Their hunting techniques are varied and most involve the use of their bill. In search of invertebrates, crows will probe the soil with their bill, flick aside leaves, dig in the soil and even lift cow paddies. They fish for tadpoles and dig nearly an inch deep with their bill for clams. In winter, their foraging continues and as these tracks indicate, when the snow is only a few inches deep they will walk around and around in a given area, probing tufts of grass for hibernating insects, mice, voles, or any other form of life these opportunists find.

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Otter Tracks

3-3-15 otter tracks IMG_5843North American River Otters have four webbed feet and strong claws that assist them in water as well as on land. There is relatively little hair on the soles of otter feet, and therefore the individual pads are often well defined in good tracking snow. Each foot leaves a five-toed track, with the inside toe on the front feet being somewhat smaller than the others. Otters have four plantar pad glands in the center of each hind foot with which they mark mounds of vegetation they create.

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Snowshoe Hare Hind Feet

2-27  snowshoe hare back foot 011It is not hard to see why the individual toe pads in the tracks of a snowshoe hare’s feet are rarely very distinct. There is a 3/4”- thick layer of hair on the bottom of a hare’s 5- to 6-inch-long hind foot. This hair, along with the size of the foot and the ability of the hare to spread its toes to a width of five inches allows the hare to stay on or near the surface of the snow, and, in the right snow conditions, outrun heavier predators.

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Meadow Vole Tracks

1-27-15  vole tracks 130Meadow voles and mice (white-footed and deer) leave most of the tiny tracks one sees on the surface of the snow. In deep snow, meadow voles tend to remain beneath the surface in tunnels, but occasionally do travel on top of the snow. Typically, a white-footed or deer mouse leaves a leaping, four-print pattern, often with a tail drag mark running between the sets of prints. A leaping meadow vole may or may not leave a tail mark and usually has paired prints. However, voles leave a variety of tracks patterns, depending on the speed at which they are traveling and the depth of the snow, so they can be confusing.

Although one might think that three different animals made the tracks in this photograph, every tunnel, track and hole was made by a meadow vole. The trail in the lower left was made by a trotting vole, the tunnel on the right was exposed because the layer of crust just under the new snow prevented the vole from going any deeper, and at the top, the vole was quickly bounding into the safety of its deeper tunnel.

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Avian Toe Arrangment

3-17-14 mourning dove tracks 004As opposed to humans, who use the entire bottom of their feet for support, birds stand and walk only on the ball of their foot and with their toes. When you look at a bird’s leg, what appears to be its knee, bending backward instead of forward as it does in humans, is actually its heel.

Most birds have four toes, arranged differently according to the life style of the bird. Songbirds, as well as most other birds, have three toes pointing forward and one pointing back. Most woodpeckers, being active climbers, have two toes pointing in each direction, which provides added clinging support. The outer toe (of the three forward toes) of ospreys and owls is reversible, so that they can have two toes in back should they need to get a better grasp on slippery fish or other prey. Some birds that do a lot of running, such as sanderlings and most plovers, have only the three forward toes. (Photo: Mourning Dove tracks)

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Fox & Coyote Tracks

1-29-14 red fox and coyote tracks IMG_2095In general, the larger the animal, the larger its feet and the tracks that they leave. Red foxes weigh between 7 and 14 pounds. Coyotes weigh between 20 and 50 pounds. The size of their tracks reflects this difference in weight. In addition, note that the coyote’s toe and metatarsal pads are quite distinct, whereas the furry-footed fox’s are not. (Red Fox tracks on left headed down; Coyote tracks on right headed up.)

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