Wow Birdie you really have a diversity of Hummers hanging around. That is most incredible! Super sharp, crisp, colorful images. You pictures have always been great and now you are turning it up another notch.
Birdied, those are great. Great birds and backgrounds. Focus and exposure are spot on. The lens certainly performs without the TC. On the my pictures of the Anna's I found the iridescent feathers benefited from lowering the feather's color luminance (assuming you shoot raw and are using adobe software). You may want to try that on picture #3. It may balance the brightness of the iridescent feathers with the rest of the picture colors.
