Researchers at the University of Oulu in Finland have shown that bumblebees can solve an insect version of the classic box‑and‑banana puzzle without prior training. In the test, a flower hovered above a pit; a bee rolled a ball into the pit and climbed on it to reach the reward. The study appears in Science, the first documented spontaneous problem‑solving in an insect.

Lead author Olli Loukola compared three cohorts: bees trained to associate the flower with sugar and the ball’s movability, bees aware only of the flower, and naïve controls. The first group solved the task at a markedly higher rate, made more attempts, and manipulated the ball more efficiently. Untrained groups performed similarly, suggesting the solution arose from prior element learning rather than trial‑and‑error.

The experiments also removed visual cues by inserting barriers, yet 16 of 22 bees still succeeded, and in a final arena test 23 of 30 reached the hidden flower without misdirected moves. While gaze and posture data remain missing, the findings provide the clearest evidence to date that bumblebees generate novel, goal‑directed solutions, prompting a reassessment of insect cognition limits.