This is a pleasing, moody kind of image. The horizon looks a little bit off. Your eye on the bird needs to line up with the eye on the reflection. You had nice muted light and I like the colors here.
Excellent colours, and I like the feeding pose. To answer your question, yes, I'd add a bit more below as the tip of the tail looks close to the edge. It does not have to be centered, but perhaps doubling the space below would be a good start.