This picture is so busy that it's hard to look at. It's hard to seperate the main subject from the background and I think it would have been better if you were able to isolate the bird from the background, maybe with a more narrow DOF.
It's so hard to capture animals in their natural environment without the photo getting overwhelmed with distracting elements. In this case you also have the added burden of picking an animal close in colour to the habitat, tricky subject. You made a good go of it, I think a tighter crop would have helped.
For survival reason's the colors of the bird blend in well with his environment. That also makes him harder to photograph. It would have helped a great deal if you had been able to throw the background totally out of focus. This would also made the picture less busy.As it is, part of his head disappears into the background. 5 Journey