Thread:Dinoman972/@comment-32744161-20180616102841/@comment-24941009-20180616143930

It's not because it has more wing feathers. It's the fact that those wings have longer wings and no visible hands, as they are holding the feathers in a similar manner to bat and pterosaur wings, allowing the creature to fly with these kind of wings (except in some cases, such as ostriches and penguins). Paravians (Dromaeosaurids, oviraptorids, ornithomimids, etc.) have their hands protuding out of the main wing structure, whose feather extension is shorter.

To sum up: the Ovoraptor has wings and normal oviraptorids have just feathered arms.