Very nice pose, good head angle,nice dorsal display.
Interesting perch, nice scale, spiderwebs. I might be tempted to tone down its brightness a bit, esp. on the left end where the two twigs come forward.
I might consider softening the background a bit where the 'line' comes in towards the back of his head.
Thanks for the comments. I had attempted to tone down the yellows and the perch but clearly not quite enough. A substantial crop- about 20% of the original which goes to show how good the 100-400 can be.