Rufous Woodpecker's Tongue

I always wonder how exactly did the woodpecker get the insects out of tree branches. Did they really peck on the tree branches until the insects are exposed and then consume it?

Some of my doubts are answered when I got the chance upon a Rufous Woodpecker (Celeus brachyurus). The woodpecker start to peck on the branch and after a while, it uses the tongue to do the finishing kill.

This crack on the branch gave the woodpecker a easier meal.

No doubt that the tongue play a very important role in woodpeckers' feeding behavior. However, I still have no clue on how exactly did they use their tongue to catch their preys. Do they have a sticky tongue like the lizards and use it to 'stick' their preys?

Perhaps video recording will help...

**Thank you YC for the link... "The woodpecker’s tongue is its most important tool when probing for larvae. It is extremely long, has specialised muscles that enable the bird to extend and retract it with ease, and the tip is covered with backward-pointing barbs. At the same time there are glands that secrete a sticky fluid. All these adaptations allow the bird to locate larvae hidden inside rotten wood and once located, to extract them."