This is from back yard setup this afternoon (feeder and camo hide)
1D MKIII
300mm 2.8L + 1.4TC
Tripod and Wimberly II
Manual Mode
1/400
f/6.3
ISO 400
Evaluative metering
What a cutie! I love these birds...but they are fast as lightning! I think with the vertical position of the perch you might want to try a more vertical crop and see what you think. It feels like the bird has a little too much negative space around it as it stands. You got a lovely BG going here yet great crisp details on the bird. Very well done! Wish his little "hat" was up but this is still a wonderful image of this bird.