Found footage horror movie that features a court of owls "member"...

Kinda! The "villain" wears a court of owls mask, rather than a hockey or Shatner mask lol. This is primarily because the film takes place at a comic convention. It's a freaky little indie that I think you'll enjoy, if you dig Blair Witch or V/H/S or just the genre itself!

https://www.youtube.com/watch?v=vqudZupgE0k