Instant fave! Holy cow, you are showing some serious chops as a bird photog/artist here. WTG! The lash of feathers, the intensity of the eye leaving the frame, the great color. This isn't underexposed, though, it just right.
What i like most at this one is that despite the underexposed context you managed to capture a nice color tonality (blue shades and orange spot).
What i'm really afraid there is too much blur and the framing (bird head).