My nephew likes to show me the edutainment videos that Mark Rober posts on YouTube, like his glitter bomb to defeat porch pirates. He showed me one that Rober did, titled “Backyard Squirrel Maze 1.0- Ninja Warrior Course”. From minute 4:00 to 4:15 he mentions that over the course of a week he put out a buffet of seven different nuts and seeds, and all four times he repeated the experiment the walnuts were always the one they ate the first.
