... if you saw a baby tyrannosaur you would probably think it was a weird looking bird. A full grown one might have had feathers too, maybe not on its whole body though, maybe more of an ornamental display sort of feathers. So traits in the theropod dinosaurs were more birdlike than say, crocodiles.

As quoted in "How Dinosaurs Loved: An Interview with Dr. Mark Norell on Dino Relations", Vice (March 20, 2012)