Great pose, perch, angle and BG. I would apply some NR on the BG and crop a little bit off the left and a bit more right so the bird does not get too centered. Keep them coming.
Rob, This is a great image. I am not sure how easy it is to shoot this (wher ever you have photographed it - location details would help). I spent more than 5 hrs behind this bird to get one decent shot of it...they are extremely shy birds here in South India and always in the undergrowth. I like the extra space around the bird. Excellent details, bg, perch and the open bill is a bonus.
I like the singing, open beak and the oof BG. All the colors go together really well. If I had to change on thing, I'd ditch the bare stick just behind the perch, but I had to try pretty hard to come up with that.
Great pose, perch , background, light, action - another vote for a little off the left. These little guys are challenging due to habitat and speed in my experience.
Really love this image and like it as is but cropping suggestions would even make it stronger. Love the singing pose and that's what makes it for me. !!