Below are images of the golden tree snake (Chrysopelea ornata) taking to the air. This species does not glide well, but it is able to move horizontally. (In other words, it doesn't just fall straight downward.)
Mid-takeoff from a branch.
Just after takeoff. Notice that the snakes tail is pointing upward; it later swings downward as the snake moves through its trajectory.
This image shows the shape of the snake's undersurface when in the air. The snake flattens, but not to the same extent as C. paradisi, which is also a better glider.
More interested in hanging than flying.
©19992005 Jake Socha