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Did you know that a chipmunk can throw its voice? Or that Wisconsin has a venomous mammal? What about the answer to the question: can porcupines throw their quills?Every Monday on WXPR at 7:45 a.m. and 5:45 p.m., the Masked Biologist answers questions just like these about living here in the Northwoods.You can keep track of Wildlife Matters and all of WXPR's local features on the WXPR Local Features podcast, wherever you get your podcasts.

How to Track Animals in the Winter

Looking for a cure for cabin fever? In this episode of Wildlife Matters, the Masked Biologist gives us some tips and tricks for viewing and documenting wildlife tracks and scat left in the snow.

Snow tracks are silent witnesses that can tell us a lot about behavior and activity. Every night, life and death wildlife dramas unfold in the snow. When I was going to college, I carried a blank page notebook and pencils so that I could sketch what I saw, then go back and look it up at the library without forgetting or confusing important details. Today, with email, digital cameras, and camera phones, everyone has tools at their disposal to document a unique observation and report it. I thought this would be a good time to give you some pointers, to help me help you determine what you see in the snow.

It helps if you get photos of both the footprint and the track. A footprint is a close-up of one individual print. Or at least, it may look like one print. In fact, many animals step in the front footprint with their back foot, making it appear as if it is larger than actual or that it even has more toes than it really does. See if you can find a good, clear print that has definition, showing all the edges of the depressions made by toe pads, heel pads, and claws if any. Put something of known size next to the print. A ruler is excellent; otherwise, use a pen, business card, pocket knife, truck keys, dollar bill or anything that you can place next to the print for the photo. I suggest you not use a credit card, especially if you plan to share the photos! Once you get home, you can measure the scale item and compare it against the photo on a computer screen. Get the camera close enough for good detail, but not so close that the photo blurs. I generally stay four feet away, then use the camera’s built in zoom to get closer; the camera’s autofocus captures detail.

Next, take a photo looking down the track. Try to get a good representation of the animal’s normal gait. Again, scale would be a great help. If you have it, use a folding plumber’s ruler alongside and angled across the edge of one complete set of footprints in the track. Otherwise, use a yardstick, tape measure, ski pole, walking stick, anything of a known length that can help us judge the length of the animal’s gait.

Finally, if you see something seemingly unusual or unique, take a photo. If you have a wolf track that has a raised-leg urination (what we call an RLU) with sprinkles of blood in it, that means there is a dominant female wolf ready to breed, and you are likely located in a wolf pack territory. Reports of these, with the location noted by GPS waypoint or latitude longitude, are of great value to wildlife managers. Animal droppings or partially eaten birds or animals are other good examples. Again, have something in the photo for scale, even if it is only your boot print. What about droppings, you ask – can I identify an animal by its feces? Usually yes I can. I oftentimes joke about being a trained turdologist, being able to recognize turds from the smallest and largest mammals in the state. Sometimes I can pull them apart and identify components of their diet.

With training and experience, you can learn to read everything the footprints, tracks and droppings are telling you. Smartphones probably have apps or websites that are helpful for tracking, but signal in the woods can be iffy, and batteries tend to drain even more quickly in the winter. If you want to learn more, check out A Field Guide to Mammal Tracking in North America and Scats and Tracks of the Great Lakes, both by Dr. James Halfpenny. They are quite affordable, and they fit easily in your pocket. You will be surprised at how much there is to learn about tracking. You can tell when an animal speeds up, slows down, looks left or right, stops, or looks back behind it by what you see in the tracks.

Striving to make new things familiar and familiar things new, this is the Masked Biologist coming to you from the heart of Wisconsin’s great Northwoods.

The Masked Biologist is a weekly commentator on WXPR talking about natural resources and wildlife in the Northwoods. He is anonymous so that he can separate his professional life as a biologist from his personal feelings about the natural world.
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