Hi, I am also a D80 user, and would like to give you some comment.
I feel that the color is too cool, mainly due to the functioning of auto white balance at that environment. ( I know that you have used auto white balance). I shot the same bird at the same environment using manual white balance. You can compare the color here :
http://www.dcfever.com/photosharing/viewphoto.php?photoID=394230
Happy Shooting !