Thursday, December 19, 2019

The Adirondack Chipmunk in Winter

chipmunk by Charlotte DemersSeveral years ago, a friend of mine from England came visiting with his wife. I was living in rural central New York at the time, and it was summer. Because I was gone most of the day at one job or another, David and Karen had lots of time on their hands to explore.

One of the things they enjoyed greatly was watching the many birds and squirrels that lived around the property, especially the chipmunks. I was surprised when David told me that in England chipmunks were sold as pets in the pet stores. Jokingly I told him we could make our fortune: I’d send him chipmunks, he could sell them and we’d split the proceeds.
While many people consider chipmunks pests, they are one of our more endearing small mammals. I suspect that part of their charm comes from the fact that we don’t see them for almost half of the year. Contrary to popular belief, though, chipmunks don’t hibernate the winter away, not really. Unlike true hibernators, who sink so deeply into a comatose state that it takes a bit of doing to wake them up, chipmunks could be considered light sleepers.

A true hibernator spends the summer and fall seeking out all possible food items and eating them. The goal is to put on as much fat as possible, for once the big sleep hits, the animal must live off its stored energy supply. If it doesn’t get enough food before winter, the animal is likely to starve to death, never waking to see the blush of dawn on a new spring morning.

The eastern chipmunk (Tamias striatus), however, spends its summer and fall collecting food and storing it away for later consumption. No gluttonous feeding for our small striped friend. Nope, the chipmunk is a hoarder. Deep in its tunnel (which can be up to thirty feet long, with many entrances and exits), chambers are stuffed with the seasons’ harvest: beechnuts (their favorite), maple seeds, sunflower seeds (when birdfeeders are near), et al. Although the chipmunk’s diet is quite varied (seeds, nuts, berries, fungi, invertebrates), the winter food supply is made up of hard foods only (nuts, some seeds), because these are less likely to go bad over the many weeks of subterranean storage. And, just in case you were wondering, chipmunks have been discovered with up to eight pounds of food cached away for the winter.

Chipmunks are not ones to put all their proverbial eggs in one basket, though. On the off chance that something happens to the food stored so carefully within the burrow, chipmunks hedge their bets by scatter hoarding, caching stockpiles of food in various other locations. Sometimes these stashes are discovered by other foragers, and other times they are entirely forgotten. This shouldn’t be considered a waste of resources, though, for any foods not eaten will either eventually decompose, providing nourishment for the soil and nearby plants, or sprout and grow into future oaks, beeches and maples.

Every fall we take note of how late in the season we see chipmunks. Once the ground is blanketed in white, though, and temperatures plunge steadily below freezing, we won’t see hide nor hair of a chipmunk for months.

Red squirrels will continue to make pests of themselves at the bird feeders, but chipmunks are conspicuous only by their absence. Until a thaw comes. There have been a few times when mild days in February or March have brought the chipmunks out of their cozy dens to forage for some fresh seed on the snow banks below the bird feeders. It’s always exciting to see their little striped bodies as they flit across the snow, cheeks stuffed with sunflower seeds.

Eventually spring will arrive, and with it the chipmunks come, ready to eat. Everything that is available is fair game. In many cases, this may be the seed from birdfeeders, but it could also be fungi, buds, or nuts and seeds not already consumed during the winter. And it isn’t unheard of for a chipmunk to inhale the eggs of small birds, or even a nestling or two. Food is food, and in the animal world it’s all fair game.

Photo of Eastern Chipmunk by Charlotte Demers, Adirondack Ecological Center.

The essay first appeared on the Adirondack Almanack on Dec. 26, 2009.

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Ellen Rathbone

Ellen Rathbone is by her own admission a "certified nature nut." She began contributing to the Adirondack Almanack while living in Newcomb, when she was an environmental educator for the Adirondack Park Agency's Visitor Interpretive Centers for nearly ten years.

Ellen graduated from SUNY ESF in 1988 with a BS in forestry and biology and has worked as a naturalist in New York, New Jersey, and Vermont.

In 2010 her work took her to Michigan, where she currently resides and serves as Education Director of the Dahlem Conservancy just outside Jackson, Michigan.

She also writes her own blog about her Michigan adventures.





10 Responses

  1. Tim-Brunswick says:

    Those little “chippers” will also kill/eat mice too!! Take it from a kid who captured & caged a chipper and then also captured & put some deer mice in there too not knowing..that the nut loving “chippers” would do such a thing. Looking in on my new “pets” about an hour later revealed the truth with the little mouse torn to shreds.

    I was heartbroken and never again did I do that. I released the chipper soon after.

    • Ellen Rathbone Ellen Rathbone says:

      I think most of us are surprised when learn that animals we have always been taught are herbivores actually turn out to be omnivores! I’m sorry you found out the hard way, though…but it was something you’ll never forget!

  2. Boreas says:

    Interesting! Did he eat them or just kill them?

  3. RC Streb says:

    I enjoyed learning more about chipmunks. I’ve always thought of them as friendly little creatures and can see why someone would want one as a pet.

  4. Micheal Armstrong says:

    I live in the Adirondacks and have a camp on the Bouquet river in Lewis. Two years ago, our first year there I started training a chipmunk to let us pet him. We supplied plenty of peanuts and sunflower seeds. By end of summer he was eating out my shirt pocket. Camp will never be the same if when he passed. All the kids love to pet him. Reminds me of growing up when my grandfather ran poc-o-moonshine campsite and had one I could pet as a kid

  5. Don marcellus says:

    I have a chipper for a pet now got him before his eyes where open on a wet hike he looked hurt .i brought him home and is doing great i love this little guy he is the best pet ever. Very clean and dont smell a bit like some other pets do hes very friendly and can pet him any time i want .

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