"It is a diamond!" he cried aloud; "oh, it is a real diamond!"
At this sudden noise from the rose-bush Mother Magpie's nerves were so shocked that she dropped the diamond helter-skelter into the hole. And in a moment she fell in after it, out of sight. She hoped that no one had seen her, but little Whitebird knew the place. He hopped after her and, perching on the edge of the hole, peered down into the hollow tree. And there he saw a great heap of silver and gold and precious stones, which Mother Magpie was trying to cover with her wings.
"Oh, what a treasure! What a treasure!" he piped greedily. "Mother Magpie, you must tell me where you found it, that I may go and get some for myself."
But Mother Magpie refused to tell.
"Oho!" chirped Whitebird, angrily; "we shall see about that! Then I will call in the fierce birds, Robber Hawk and Fighting Falcon and the bloody Butcher Bird, and they will take your treasure from you, and kill you, too, into the bargain. What do you think of that, Mother Magpie?"
Then she was afraid, for she knew those bad birds; and she saw that she must trust her secret with Whitebird, since he had already discovered half the truth.
"Well, if you will promise me not to let any one else know, not even King Eagle, I will tell you," she said. So Whitebird promised.
"Listen," said the Magpie. "You must find the cave which is near the tallest oak on the mountain, under the flat stone. In a corner there is a tiny hole, just big enough for you or me to pass. And this is the entrance to a passage which leads down into the cellars of the earth. And when you have gone down and down, farther than any one except myself ever went before, you will come to the palace of the King of Riches. It is full of gold and silver and precious stones like these you see here. Each chamber is more beautiful and more tempting than the last. But you must not touch a stone or a single coin, or even a little bit of gold-dust, until you have seen the King. For first you must offer yourself to be his servant, and then he will be generous; then he will let you carry away as much treasure as your beak will hold. That is all there is to it. But beware, greedy Whitebird! Take my advice, and do not touch a grain of treasure before you see the King, or great evil will befall you."
Whitebird promised to do as she said. And then away he flew to the blue mountain and its tallest oak. Close by the great oak, in a lonely spot, he found the flat rock, and under it was the cave where once a bear had lived. Whitebird hopped in eagerly, and away back in one corner of the cave he found a little round hole, as the Magpie had said; a hole not much bigger than an apple. It must have been a tight squeeze for fat Mother Magpie!
Whitebird hopped through the hole and found himself in a long, narrow passage which led down, down, down into places where his eyes were of no use at all. For he was not like Master Owl, who can see better in the dark than anywhere else. Blindly he hopped on and on, till he came into a great cavern, bright with a white radiance, as if the moonlight filtered in from somewhere. It was the first room of the King's palace of treasure; and it was all of silver, paved with silver, heaped with silver, shining with silver. Whitebird's eyes glittered and he wanted to stop and take some for himself. But just in time he remembered the wise warning of Mother Magpie; and so he hopped on over the silver pebbles through a silver door into a second room. And this was flooded with yellow light as of sunshine, so dazzling that for a moment Whitebird's yellow eyes could see nothing at all. When he could see, the place seemed full of yellow eyes like his own, great yellow eyes heaped up from floor to ceiling. And when he became used to this he looked again and saw that these were golden coins, and that this was a cavern all of gold.