What snake disguises itself in flowers and eats hummingbirds?

It should be a bronze javelin snake in South America. This snake lives in the area where hummingbirds live and likes to hide between flowers and branches to hunt. Because of its small size, it can lurk in front of the flowers, but a heavy snake can't. A considerable part of the bronze javelin snake's food is hummingbirds. http://www.vivanatura.org/Oxybelis_aeneus_ 1.jpg