Went up to see my Brants today--photographed this one taking a flap.
The black brant actually has a lot of brownish, underlying feathers.
1DMKIII 300/2.8 IS + 2X TC
1/2500s f/9.0 at 600.0mm iso640 -1/3
Good timing, nice light and the wing position is sweet.
The head, eyes, bill would look much sharper with some selective USM, a 2.5 second job at the most. I would run some curves for some more punch but thats a pers pref.
Good composition and great pose. The reflection adds interest also. Very well done. Agree that a little selective sharpening on the head will improve this already fine image.