Superb shot ! these are really nice pictures. When you’re composing your close-up bird shot, the background is extremely important for ensuring an effective photo. You usually want a dark or neutral background, so the subject pops out. Set the exposure metering mode to spot metering, so you can get a reading of just the subject while ignoring the background.
Not having Humming birds in the UK i cant imagine the pleasure of being able to get pictures like that with a 200mm
I still have a hummingbird hanging around in my backyard.