Was playing golf this morning - got to learn to bring my binos even while golfing! - when I spotted a bird at the very top of a (approx) 25' tree. It seemed to be about 12" long with a "good" length of tail feathers. Where is called, it's tail lifted. Not vertical, but some.
It's called was a descending "tweee-derp" (close to that). A single sound, descending in pitch - ie, high note to low note.
My first thought was a Kestrel or Northern Shrike, but my books say differently on the call.
Hope that wasn't too vague!
Help?
Rory