Geoff, if you post the shot a bit bigger, it'll be easier to see to comment on.
Click on the following link for a discussion on how to post bigger from pixspot.
http://www.d70users.com/viewtopic.php?t=7133&highlight=
I took the liberty of
modifying url to post bigger, hope you don't mind.
Re the photo, I reckon it's a great shot. Pity the bird didn't have his mouth open.
Cheers
John