The hidden rule for flight feathers--and how it could reveal which dinosaurs could fly

Scientists examined hundreds of birds in museum collections and discovered a suite of feather characteristics that all flying birds have in common. These 'rules' provide clues as to how the dinosaur ancestors of modern birds first evolved the ability to fly, and which dinosaurs were capable of flight.

from Latest Science News -- ScienceDaily https://ift.tt/sd9M1h8