“These results suggest that diffusive motion [random walks] in Mexican jumping beans does not optimize for finding shade quickly,” the authors concluded. “Rather, Mexican jumping beans use a strategy that minimizes the chances of never finding shade when shade is sparse.”
Thanks, that led me to this article: https://arstechnica.com/science/2023/02/taking-a-walk-on-the-random-side-helps-mexican-jumping-beans-find-shade/