Beautiful bird and great wing position. I suggest cropping off some of the area in front and below the subject. The whites are a bit hot and the darks could use a bit more exposure. The eye could be more visible. Try selecting the eye and adding a curves layer to lighten it up. A touch of saturation will also help. I also see a bit of a halo along the edges.
Wow you were close....I really like it that you were able to use this shorter focallenght as it makes the sky come out very well. I agree with the comments about the exposure.
Thank you for taking the time to comment. Regarding the whites, in adjusting levels I made sure that none of the individual rgb channels got clipped. So, the whites should be ok. But they surely look bright.
Anyway, exposing for these birds was one of the biggest challenges I've encountered so far. Good practice though.