Oh, dear, certainly hope I'm not the one supposedly providing false information.
So sorry if any of these identifications were incorrect. Still positive about the Northern Harrier, though, due to white band at the base of an unfanned, long tail, and flattened owl-esque face. There's little mistaking a Red-Tailed. Alleged Sharp-shinned resembled a juvenile Cooper's, but miniaturized. Not significantly larger than my smallest Silkie hen, whom it was struggling to finish off before I intervened.
~Alex

~Alex