| 11. | Predation of other vertebrates by Columbian ground squirrels has not been described.
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| 12. | The face of every ground squirrel bears red streaks to this day.
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| 13. | Historically, ground squirrel, muskrat, and caribou were commonly used for clothing.
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| 14. | The tail is thicker than the other ground squirrels with fringes.
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| 15. | The ground squirrel constantly flicks its tail in a distinctive manner.
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| 16. | Townsend's ground squirrel density can fluctuate greatly from year to year.
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| 17. | It contains Columbia ground squirrels feed on the leaves and flowers.
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| 18. | Eagles will not enter burrows, unlike some mammalian carnivores that eat ground squirrels.
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| 19. | This has been supported by evidence in the Arctic ground squirrel.
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| 20. | Nicknames : Peace Garden State and Flickertail State ( for Flickertail Ground Squirrels)
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