We have hawks here in the suburbs of D.C.(even at the Natl Cathedral) I'll post a couple of pics I took of one in the front of the house.  And just a month ago neighbors were walking a little yorkie on a leash across the street and I caught it out of the left corner of my eye a medium sized brown tailed hawk swooped down to size up that little dog and missed the couple by inches they didn't even see it fly over them as they were looking the other way. That bird could have yanked that leash and dog right out of their hands!!!!!  I think this is the one.