That eye sure is an attention grabber!! Good job on the exposure, and I like the detail you got here. I would love to see the OOF whitish area touching the bill toned down (greened up!), and also to see more room above and right. Overall nicely done:)
What a stunning bird and capture. The BG works well for me and I love the profile pose. The square crop does work, however, it's a tad centered for my taste, and I think I might try a vertical (which you may well have already done and preferred this.)
Beautiful shot. Great BG but I agree with Daniel's comment about the whitish area. I personally like the horizontal but would give it just a tad more space to the right. Don't know if it's my screen or if it's possible to sharpen the eye just a tiny bit.