I didn't realize you were so close..............all i was getting at was the you need to fill the frame with the subject(hummingbird). It is taking such a small portion of the frame in your shot.
They are such tiny birds it really takes alot of lens to get them up close, and then they move so dang fast you're lucky to get a shot off
Please don't take my critique as a personal attack, because it wasn't. You asked for critique and i gave my honest oppinion in hopes it helps your photography. Which i appreciate others critique on my photos as well, because it really helps me understand how others view my work.