Another stunning capture Glenn. I'm looking forward to your 2014 Costa Rica trip. Beautiful colors, amazing bird, and great BG as usual. Well done to capture this by natural light. I can't think of anything to improve. Very well done!
I don't see underexposure, but the darker tones might be brought up a little in raw processing. I don't mind the wing blur -- might have been dim light. Given the difficult choices of balancing shutter speed, DOF and exposure, I don't find this a bad compromise.
I really like the colors and background but to me the ss is a little slow...there's a little too much blur here. LOVE Costa Rica too, but I spend much more time surfing than shooting.
The Bg is amazing,
I like the pose captured and it depicts all the features of the bird (crested)
Details are nice, the wings show motion making it interesting , i love the flower colour.
good image and all the best for the new Costa rica trip wishing you a wonderful time with more new species for us to view.