Nice hummer Fernando. Eye is sharp, and the flowers are pretty. It would be nice to have an unobstructed view of the bird feeding from the flower. What were your aperture and focal length on this shot? DOF seems rather shallow.
Thanks for the extra info. Just out of curiosity, why was your EC set to -2? Shooting wide open at ISO 1600 and getting only 1/320 suggests that there wasn't a whole lot of light when you took this picture.