In a 1995 experiment, pigeons were rewarded for pecking at paintings by Monet but not Picasso, or vice versa. They learned the difference, then correctly sorted canvases they had never seen. Better still, they generalized to other artists, grouping Cézanne and Renoir with Monet, and Braque and Matisse with Picasso.
In 2022, a young tagged bar-tailed godwit flew from Alaska to Tasmania in about 11 days of nonstop flight, covering 13,560 km without eating, drinking or landing. Before departure, these birds pile on huge fat reserves and shrink their digestive organs, which are useless during the journey.
To escape rivals, a dung beetle rolls its ball of dung in a straight line. At night, it holds its course using the glowing band of the Milky Way. In a planetarium, researchers showed that beetles rolled straight under a starry sky but wandered aimlessly when the galaxy was switched off. It was the first animal known to navigate this way.