I like the wing position, sharpness and eye contrast and wish the bird were flying towards you. The color temperature looks a little warm considering the high shutter speed.
We have a flock of pigons down on the local shore and I sometimes go down and use them for flight shot practice. Captured in good light and some lovely detail in that underwing. A good sharp flight photograph. I prefer front on or at an angle photos for birds in flight where possible as I just think they are more interesting especially if the bird is coming in to land.