They are back.
I think this is a good attempt. I wish we had hummingbirds in Australia.
It appears that the location of the hummingbird is restricted to a specific feeding point, so it is not necessary to go down to F8 for DOF reasons. I would suggest increasing the aperature to F4 (2 stops) and reducing the ISO to 800 (- 2 stops) to reduce the noise. I don't go above ISO 1600 with my K20D.
Dan.