Hi Steve. Nice image, the twigs add interest, and a decent composition, though it does need some space on the right. We can post images up to 1024 pixels in width, though there is a 200Kb limit, and this small image lacks detail that a larger image might show.
The big problem to me is the shadows, and the sun popping out is the culprit.
Although it is possible to take excellent images of the brown pelican in flight in high contrast light, see Pat Lillich's image in ETL
here, generally in high contrast light (direct sunlight unfiltered by clouds, etc.)the appearance of dark shadows, caused by the pelican's body and its own very long wings casting shadows on the body, reguire almost precise postioning of the subject in relation to the light source to avoid these shadows, which is very difficult with a bird in flight.
Therefore there is a considerable advantage in using the low contrast light of overcast or cloudy skies with brown pelicans. Soft light, as low contrast light is usually referred to, prevents not only the appearance of clipped highlights and blocked dark parts of an image with proper exposure, but shadows are likely far more diffuse or absent altogether. Since the dynamic range has been reduced so that the camera sensor can capture the full range, post-processing is much easier as well. regards~Bill