Saturday 6th December 2025
    Difficulty: Medium

    Squirrels and their nuts (#1,114)

    Photo by <a href="https://unsplash.com/@cmart10?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Caleb Martin</a>
    Photo by Caleb Martin (Unsplash)

    The comedian Sarah Silverman once joked that squirrels forget where they bury 80% of their nuts. “And that’s how trees are planted!”. But what's the truth?

    1. Roughly how big is a grey squirrel's home range?

    2. Roughly what percentage of the nuts they hide do grey squirrels later retrieve?

    3. Apart from the locations where they hid their nuts, what else do squirrels remember?

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