WOAH. Stunning. Single saturation doesn't always "work, " but man, this is perfect. Love it. The golden yellow of his eyes just jumps out of the page, and the off centering in combination with the natural framing - GOOD STUFF!
Fantastic post processing. With that hand holding on to the cage and the intensity of the eyes, my initial reaction is empathy for this beautiful creature. I like a photo that makes me feel something and you have brought that out very well with this shot.
This has a poster feel to it all the way. Come up with a cool caption and sell it to a calendar company. You couldnt have asked for a better pose. The editing is great with the selective desat and the vignetting. Striking shot all the way around.