Seems like a Juvenile Red Tailed Hawk,

The body is much larger than a gosh hawk and the wings are more thick and short, a gosh hawk is a slim bird and the spots/stripes on ther chest are more together, and there heads are also smaller with longer legs.

Beautiful & R.I.P the squirrel lol.

Great pics =)

Oh and here is another photo of a Juvenile Red Tailed Hawk.