First-ever study shows bumble bees 'play' - Queen Mary University of London

Bumblebees 'play with balls for enjoyment' say scientists, Tech News

Bumblebees learn to solve puzzles by watching more experienced peers – study

Bees are really highly intelligent': the insect IQ tests causing a

Bumblebees Learn To Solve Puzzles by Watching Other Bees

Bees can solve puzzles by watching their friends - BBC Newsround

First-ever study shows bumble bees 'play' - Queen Mary University of London

Scientists find bumble bees love playing with balls

Bumble bees 'play' just like kids

Bumble bees 'play with balls for enjoyment