Very nice! The bird upper left really makes it, I think. It would be a sort of bland post card without it, but with it, there's some life to it.
My one quibble is with the lumps on the right, at the edge of the river. I suppose they are clumps of weeds, perhaps? I find them confusing and out of place. On the one hand they do balance the flying bird, and they definitely add some visual mass, which is nice. On the other hand, I wish I knew what they were! If you could get a little more detail into them, to at least make me think I understand them better, that would (I feel) improve the image.
Might consider a very light vignette on the bottom of the frame, darken that edge down a hair to help the frame out.