Dang it! I was already to say I liked this one the best but that head turn kills an otherwise beautiful image for me. I still think you're getting an amazing blend of freezing/blurred motion and the details in these images have been terrific. I just want him to turn that little head around sooooo bad!
I love the BG and the bird's colors in this shot. I have to agree about the HA, but it doesn't ruin the shot for me. What a delightful little bird and how lucky you are to have them in your garden!