This Chestnut-sided Warbler was singing its heart out. This is the same one as my previous image. I tried to tone down some of the bright areas in the image. Comments are welcome.
Nikon D200 Nikon 70-300 4.5-5.6G VR 1/640 sec at f 6.3 and 300 mm ISO 400 Hand held
Great singing pose of a lovely little warbler. Looks sharp on my screen. I agree with your comment about the size of the perch on your previous post - it's a bit overwhelming there and here, but not a killer. BG does seem a little distracting, and although you toned it down some, a little more might help. This angle shows his signature chestnut flanks, but also a lot of white breast; were you able to get one turned more to the side to show off some of his other lovely plumage?
Nice singing pose as mentioned. One of the challenges here is the uneven lighting on the bird. If noise doesn't intrude too much, you can even the bird out a bit with some selective curves work. i think as the bird becomes a bit lighter, it will help downplay the background a bit more.
If the image quality will tolerate it, I might consider cropping down from the top about 1/3 of the free space.