Please help ID this bird
(Toronto, Ontario, Canada )
I saw this bird outside my window around 9:15am.
It was flapping around my backyard, trying to catch a squirrel.
The squirrel ran into some bushes, and the bird just waited on my lawn looking at it until the squirrel went back out onto my lawn.
It really seemed unbothered by this bird.
It flapped around trying to catch the squirrel again but was unsuccessful and just flew away.
The bird looked pretty big, can anyone can help ID this bird?