Science A story for the birds? The incredible shrinking dinosaur.

The skeletal changes taking place during the 50-million-year dinosaur-to-bird transition were occurring four times faster than for dinosaurs as a whole, a new study says.

By , Staff writer

Davide Bonnadonna/Science/AP

For decades, paleontologists have been uncovering the remarkable evolutionary relationships between fearsome, two-legged, meat-eating dinosaurs and birds.