Having spent 5 great days in Southern California with David Salem, I'm sending an image or two for comment.
This one was about the best of the in-flight redtails.
I've left fluff on the beak, presumably from a kill (could come off, but it reminds me of the first hawk of 5 days).
1/2500
f5.6
800 ISO
1DX
840mm (600mm + 1.4)
Any cc much appreciated