19 thoughts on “What is this?

  1. Dinosaur tracks, a safe bet.
    After all, even ducks are dinosaurs. 🙂

  2. The arrow of time according to the Drunkard’s Walk minus the Second Law of Thermodynamics?

  3. A highly disconnected (mathematical) tree–graph with no loop. Maybe a tree is expected to be connected–ah well, at least it sounds somewhat biological.

      1. Well, surely ‘yes’, at least as long as you are willing to be a single-cell creature, along with many other things.

        I am.

  4. Now you need to pay attention to the minutia of the duck prints to see if you can tell the individuals apart by their foot ‘fingerprints’ in the same way you have been able to identify Honey by her bill markings 🙂

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