Wildlife on the Patio

I was working when I heard the thump. It sounded like a large snow pack fell from the roof. The problem was that we haven't had enough snow for that to happen. I looked in the house and didn't see anything. When I went to put Holly on the tie-up, I saw a dead squirrel on the patio door ledge.
I called Daddy and told him that we'd probably find a dead or injured bird in the yard. I didn't think a coyote left the squirrel, but I imagined that  bird ran into the patio door before it dropped the squirrel.
A few hours later I heard a strange sound near the patio doors. I looked out to see a huge bird attacking the squirrel. Holly heard it too and barked. The bird flew to the power lines in the backyard.
When I say this bird was big, I mean too big to fit inside our Webber grill. Not that I wanted to cook it, but when I told people how big it was, that was the best way to describe it. The bird went back and forth between the patio door ledge and the wires for a while.
I was tired of Holly barking, so I took a shovel to throw away the dead squirrel. The huge bird (identified as a hawk by friends looking at the picture on social media), didn't stop when I came on the patio. In fact, it just kept eating. I decided my plan wasn't that wise and went back into the house.
The bird finally left when the sun went down. Daddy came home and cleaned up what was left. As he walked into the house, he said there was a blood streak on the patio door. This made sense. A friend told me that she had the same thing happen at her house. She thought the hawks hit their prey against the patio door to stun or kill it.
My fear right now is that the hawk thinks our patio is his new lunch table. If it happens again we'll have to figure out how to change his dining reservation. This was a long, disgusting afternoon. I'm not anxious to do it again any time soon.