Flexible skulls and larger brains evolved in birds

New research from the University of Chicago and University of Missouri reveals how larger brains and flexible skulls contributed to the evolution of modern birds from dinosaurs. This study highlights the mechanics of bird skulls and their ability to move independently. The research shows that as brain and skull sizes increased in non-avian theropods, muscle positions changed, allowing for greater mobility in the palate. This adaptation, known as cranial kinesis, enables birds to eat a wider variety of foods. Previously, feathers were thought to be the main distinction between birds and dinosaurs. However, this study suggests that flexible skulls may be a clearer dividing line, marking the evolution of modern birds from their dinosaur ancestors.