PARIS: Why did birds lose their teeth? Actually, birds gave up teeth to speed up egg hatching, a research paper published Wednesday suggests, challenging long-held scientific views on the evolution of the toothless beak. Compared to an incubation period of several months for dinosaur eggs, modern birds hatch after just a few days or weeks. Previous studies had concluded that birds – living descendants of avian dinosaurs – lost their teeth to improve flight. But some dinosaurs with a very different, meat-eating diet had also discarded teeth in favour of pointed beaks.

Source: New Strait Times May 22, 2018 23:03 UTC