Guess the Raptor

I don't know crap about birds (wait, maybe what I do know is crap).  Anyway, the point is I'm no good at identifying the local avian hordes.  My quick research tells me this is a Sharp-Shinned Hawk. But it could also be several other kinds of raptors. Please comment and set me straight.  I have zoomed in the 2nd time through to help with the ID.