Wowee - this is gorgeous. The sharpness of the image sells the IS on that lens. And it is wonderful composition and good contrast besides. He's a magnificent fellow. Very nice!!
look at those eyelashes----nice detail in this. I'd like to see his head framed tighter (as per the usual .... ;o~) and I'd especially like to see a close up of his eye, lashes included. He stands out nicely against the background, even in the B&W. Good job.