Reader Dennis Hansen (see crab post below) has just uploaded a video to YouTube showing a bit of a color-choice experiment he’s doing with the giant tortoises of Aldabara, but then. . . well, I’ll let him describe it:
What I do have a video of is a coconut crab interfering with a colour choice experiment I did last time. The tortoise took too long to decide if/what colour to eat next, and a crab walked up and made its own choice.
He promises some good video of coconut crabs (and their feeding frenzy at human mealtime) when he returns to Aldabra in a month.