Wow! Good capture. Good composition but maybe a little too much saturation of the reds/magentas of the snake's mouth. A little more sharpening of that area with more definition of the internal mouth structure by dodging and burning carefully to bring out more of the mouth detail.
From your title, I kind of expected to see a bird as well. Don't worry, I won't doc you any points for "false advertising." :-) I like the open mouth capture. Some of the branches and leaves are a little distracting, but overall I like your photo.