Great series Joe! Must have really been a thrill!
Nice low shooting angle! My faves are number 3: Shows action, good angle of the bird toward you, also like the little water drip on his bill...might try to get rid of the stick in the upper rt corner. The last portrait is sweet too...great background, almost dreamy-looking and complementary to the bird ...(the feather/stick bisecting the bird is a bit distracting.) I love images that look natural and are not over-processed.
Thanks for sharing this cutie with us! 
Thanks Sandy. Funny you mention #3...I posted it on a critique forum and was told that I missed critical focus on the head.

Which could be true, I was at 1,000mm and I had to manual focus, so there's no surprise it's not as tack sharp as some of more cropped ones that were taken without the 2x teleconverter.
My favorite is actually #6, but the seaweed/junk behind the bird is such a distraction. Perhaps after getting a CD course on some tips and tricks in photoshop I'll be able to get rid of that stuff.