When they hatch, toucan chicks are roughly the size of a chicken chick. An adult female can lay two to four eggs, and the incubation period is 16 to 20 days. Due to a shorter incubation than most ...

An unprecedented fossil of a baby dinosaur curled up perfectly inside its egg is shedding more light on the links between dinosaurs and birds. The 70-million-year-old fossil preserves the embryonic ...