Hawks have a supra-orbital process - bone above the eye that acts like the bill of a baseball cap to help them hunt ground prey in the middle of the day.
Falcons have a malar stripe - looks like a little mustache starting at the top of their bill and going down the cheek. Works like "eye-black" used by football players to reduce glare.
This guy's totally got a SOP goin' on. Maybe he's just a bebe?