Nice video. I had a hawk land right outside my window after a chicken. Had to run out and scare it off. I found that shot gun blanks work well as a deterrent if you are in a location that you can use them. They don't like the noise, it's effective at a distance or when they are in the air. and after a few encounters often avoid the area, and of course it is illegal to kill them. It looks like you don't even need to bother with deterring them.
Immature Red Tail. Some of them are very poor hunters and are very hungry. My birds have been being stalked by one for a week. I am leaving them in tomorrow.