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Blue Eastern Cottontail Urine

A recent (1/22/21) Naturally Curious post on the color of Eastern and New England Cottontail and Snowshoe Hare urine mentioned that occasionally it turns blue after a few minutes in the sun due to consumption of the twigs and bark of the invasive shrub, European Buckthorn (Rhamnus cathartica). At the time of the post I had not had the opportunity to photograph it, but recently came across some so thought I would share it with you today!

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6 responses

  1. Yay, I rarely notice rabbit scat in my yard, but did yesterday and saw a dark orange hole urine hole in the snow. I was thrilled!

    January 27, 2021 at 8:27 am

  2. Alice

    We know what that bunny had for breakfast!

    January 27, 2021 at 8:41 am

  3. I wonder if the color change is chemically similar to what happens when red wine stains turn blue after a bit (no sun required).

    January 27, 2021 at 8:48 am

  4. I wonder if they like beets……

    January 27, 2021 at 9:06 am

  5. judilindsey

    Mary, Excellent! Thanks for this amazing photo update! Judi


    January 27, 2021 at 9:29 am

  6. Lin Peyton

    Thank You…..I am looking hard for signs in the woods. Haven’t seen any yet this winter (in Maine) Finally a good blanket of snow today, YES…

    January 27, 2021 at 11:02 am

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