★ 0.0
★ 8.3
★ 8.0
★ 7.4
★ 6.1
★ 7.3
★ 6.3
★ 5.0
★ 7.1
★ 8.1
★ 5.8
★ 7.0
★ 7.2
Whoever came up with the term 'bird brain' never met these feathered thinkers, who use their claws and beaks to solve puzzles, make tools and more.
