Those Boat-Billed Heron eyes light up like no other bird when you use flash! I've given up entirely on using flash with them. You did well with the exposure here, and I like the head angle. I would move the bird up in the frame.
Love the pose and the great eye contact. I tried to capture one of these while visiting Costa Rica but there were always to hidden or too high. Congratulations on a fine image and thanks for sharing.