It's funny - until you said that, I had completely forgotten about throat-feathers and the whole dino status/communication elements... I guess having a helmet that is permanently expressing dominance and command in speech does work pretty great for a big-time chieftain, eh?
That's some formidable headgear! You wouldn't want to play any metal music around him; the headbanging would be brutal. Very glad to see more raptoid stuff from you. As I always say, the cultural accoutrements are what make these concepts. That Oviraptorid skull is a great design element. Excellent drawing.