Thanks for the heads up on the black vultures. We have both varieties here; they often land on top of the utility poles at the barn and preen or wait until some thermals come along. My experienced girls can tell the difference between vultures and hawks, but the closeness of the vultures makes them nervous, so I usually just shoo them away.
On another note: on the way back from town yesterday, driving one of our county backroads, I suddenly saw a rooster (looked like a Welsummer) and his hen casually crossing the road. Slowed down and both wandered into the brush. Moved on and saw them again in my rearview mirror, just scratch and peck on the road. I'm afraid they'll likely be hit by car.

I'm used to seeing snakes, squirrels and foxes cross the roads but never a pair of chooks!