I like the incoming pose, sharpness and nesting material but the BG puts it over the top for me. If anything, I wish the nesting material wouldn't partially cover the eyes.
One can only appreciate the difficulty of an image like this if they have tried it. For me, the dark colored bird against that bg, and carrying nesting material too is just superb. The stick/eye thing doesn't bother me in the least as you still have eye contact and that's where their bill is.
I'm a big fan of vibrant photographs and the bg here is just gorgeous. I'm not crazy about the wing position but that doesn't alter the feel of this image.
There's enough of the bird showing to make this work. Sometimes we see a slither of an outline of a bird flying towards us, with no detail, and it doesnt work. I like the flying posture in this, and his building material a bonus. Actually your amazing technicolour BG is a bigger bonus. Well captured Fabs.