I love the sky! Brilliant colors. However, the subject is less interesting as it is a little too dark and small to see and almost fades into the grey clouds. I know it is impossible to put the bird where you would like, I would have much prefered seeing more light on the bird and non of that grey cloud stuff. =)
Good capture and a fair composition too. It would have been nice to see more of the gull, although the angle does minimise its profile which actually assits the composition.