Two tall trees, a birch and a beech, are growing in the woods.

A small tree begins to grow between them.

The beech says to the birch: "Is that a son of a beech or a son of a birch?"

The birch says he cannot tell.

Just then a woodpecker lands on the sapling.

The birch says, "Woodpecker, you are a tree expert. Can you tell if that is a son of a beech or a son of a birch?"

The woodpecker takes a taste of the small tree.

He replies: "It is neither a son of a beech nor a son of a birch.

It is, however, the best piece of ash I have ever put my pecker in!