Via CBC: (hat tip Floyd)

At least one species of dinosaur had a feathered tail “built for
flaunting,” says University of Alberta scientist Scott Persons, who
argues that it is time to update the portrayal of dinosaurs as big,
dull, lurching creatures.

The oviraptor, a flightless vegetarian and a distant relative of the
T. Rex, had a large fan of feathers at the end of its sturdy and
flexible tail. The non-avian dinosaur also had other birdlike features
such as beaks and crests — all features Persons suggests would have
spiced up the Mesozoic landscape….