Researchers have long suspected that Velociraptors were feathered rather than covered with reptilian scales. In 2007, a study published in the journal Science found that a Velociraptor mongoliensis fossil had quill knobs—bumps along its forearm that anchor feather quills to the bone and are common in modern birds.

How do we know that Velociraptors had feathers?

And in 2007, scientists found good evidence that it was covered in feathers. ... The team recognised these as quill knobs, small lumps of bone that act as attachment points for feathers. These knobs are direct evidence that Velociraptor carried a row of feathers on its forearm, probably about 14 by Turner's count.

Is there a Velociraptor without feathers?

In Jurassic Park 4, the film's director has stated, there will be no feathery dinosaurs. ... Three years after the first Jurassic Park debuted, paleontologists announced that the small theropod Sinosauropteryx was covered in a fine coat of fuzzy protofeathers.