As a side note, my dog flipped out when one of these birds flew a little too close to her and jerked the leash right out of my hand. I was shooting these one handed as the other hand had her leash. I had to put my camera down in the weeds so I could climb over about four fences that she just ran through like it was nothing. I finally caught her and retrieved my camera after the chase. So I guess she was chasing the vulture and I was chasing the dog.