On the trunk of an apple-tree he caught sight of a gray and black and white bird about the size of Downy the Woodpecker. The top of his head and upper part of his back were shining black. The rest of his back was bluish-gray. The sides of his head and his breast were white. The outer feathers of his tail were black with white patches near their tips.

But Peter didn't need to see how Yank-Yank was dressed in order to recognize him. Peter would have known him if he had been so far away that the colors of his coat did not show at all. You see, Yank-Yank was doing a most surprising thing, something no other bird can do. He was walking head first down the trunk of that tree, picking tiny eggs of insects from the bark and seemingly quite as much at home and quite as unconcerned in that queer position as if he were right side up.

As Peter approached, Yank-Yank lifted his head and called a greeting which sounded very much like the repetition of his own name. Then he turned around and began to climb the tree as easily as he had come down it.