Exactly, vultures are the scavengers and probably hang with the hawks to get the sloppy seconds . . .
In my neighborhood, I swear the crows and the hawks work in conjunction with one another. When I go outside, after awhile, you'll hear some crows and then right behind them cawking you hear a hawk in the distance . . so I swear, the crows DO alert the hawks when I'm outside with my little ones . . .