I suspect the issues you see are not seen or understood by others viewing your work, which looks so perfectly controlled to my eyes. I have images with flaws, and the flaws are sometimes the only things I see when I look at them. Other people love the prints and never even notice or understand my issues. I think sometimes our photographic eyes are too well trained. One of my other hobbies is close up magic, mostly cards. One of the hardest things is to think like a layman. Moves and ideas that are so obvious to me fly right by the normal spectator. I think photography is the same thing. Unless you are somehow trained to look, you never see.I never have an image without issues. That's true even when I'm making a photo in my makeshift studio, which allows me more control of the situation than any other shooting situation.
Thanks for this feedback Gary. I did try to darken the background with a layer mask, but the difference in brightness was simply too much with the bird in shade and BG in partial sunlight. As you pointed out before, I need to keep looking for the best light.Still watch the foreground and background. The dappled background is still the lightest area in the image. The out of focus foreground blob in the left lower corner and some out of focus twigs weaken the image. Not trying to nitpick, but that is how I look at my own images. I rarely have an image without some issue somewhere.
Go shoot some more.