Never have heard of a CFB... BUT there is such a snake that is called the flying tree snake.

Flying snakes are a small group of species of tree snakes that live in South and Southeast Asia. At rest they appear unremarkable, but on the move they're able to take to the air by jumping from the tree, flattening the entire body, and gliding or parachuting to the ground or another tree.

http://www.naturia.per.sg/buloh/vert...tree_snake.htm
Has more info on them

So does this one * plus some awesome pictures of them...
http://home.uchicago.edu/%7Ejjsocha/...yingsnake.html