So those are meant to be feathers on their heads, right?

I forget what made me realize this, but I remember I was just looking at I Want to Say Wargreymon, and I was like, "Oh wait a minute, those are feathers. I always thought it was hair, but then I remembered, 'Oh, dinosaur, that's right, dinosaurs have feathers. Well, not all of them, but we can assume quite a bit did, specifically theropods,' but I could be wrong, and maybe it is intended to be hair what are you guys think?