These spirits/gods have different names yes, whether they are the same being I don't know, it could be that there are simply similarities, like between Baal and Yahwe.
My goal was mostly to make these beings fit, in the way that it might work, so I made this name anagram. I certainly didn't want to do it the way some authors do, e.g. I remember one where the werewolves called themselves "breed". Not gonna be having that.
I have a bantam rooster that was a former fighting bird, and although he's usually friendly enough, he has "relapses" and attacks you. He recently left my father's arm bleeding in three places, and flapped up my leg and used his spurs. Even tried to attack the blacksmith... I SWEAR THAT THING KNOWS NO FEAR.
He also happens to be called "Chuck Norris". :'D
He looks kinda like this though - [link] [link](got more feathers than this second one though - he kind of has almost a "mane" or "ruff" of feathers that stands up when he's annoyed - WARNING XD!)
And that is kinda a problem - terror cranes are a great idea, although I think maybe you could strike a balance where the eyes kinda face diagonal, so they're not as sideways as the normal chicken, but not completely binocular vision either... anyway, it's up to you in the end, and haha, I'll totally love the beast form... a.k.a. "what Chuck seems to think he is".