If Looks Could Kill (Buteo jamaicensis)

Still resorting and recataloging my images. This is another old one. I took this digiscoping. I think this may be a female, because she was so big. She was trying to catch a squirrel and because of that I was able to approach quite close. The squirrel would flip around the tree every time she make a strike. She would go to a limb and express her displeasure by snapping her beak and mumbling to herself. After about 45 minutes and 200 images I got tired and left them to their deadly game.