Vultros is a rare level 10 carrion bird (specifically a blue vulture). He used to be a level 26 elite that dropped a very notable dagger called the Talon of Vultros, which was highly sought after for twinks. Since the Cataclysm the stats on the dagger have changed, and it is unconfirmed at this point whether or not he still drops it. Rogues have gotten it out of low level lock boxes, but at this point Vultros only seems to drop the typical green or white item for his level and a decent amount of experience for people leveling.
He would also make a very nice hunter pet for low level alliance hunters who come across him. Up until level 30 he is the only tamable bird in this color.
He spawns in five different locations in northern Westfall. I have indicated these spawn locations with red dots on the map below. Once spawned in, he will not patrol between these points.
Vultros can be found with NPCScan. You will need to add it, his NPCScan ID is 462.
You can also use this macro to help find and tame him:
/cast Tame Beast
Before the cataclysm this guy was pretty darn hard to come by, with a spawn timer between 21-32 hours. It has been significantly reduced since then and now seems to be between 30 min - 1 hr.