<img src=”https://naked-science.ru/wp-content/uploads/2025/02/photo_2025-02-20_15-36-15.jpg” alt=”Emu and rhea have been shown to be able to solve puzzles for the first time”/>Scientists have demonstrated for the first time that paleognath birds such as emus and rheas can solve puzzles to gain access to food. It was previously thought that the small size of their brains meant that these birds had limited cognitive abilities, but the results of the experiments refute this idea.