They went forward until they came to the Ousel of Cilgwri. And Gwrhyr adjured her for the sake of Heaven, saying, "Tell me if thou knowest aught of Mabon the son of Modron, who was taken when three nights old from between his mother and the wall." And the Ousel answered, "When I first came here there was a smith's anvil in this place, and I was then a young bird; and from that time no work has been done upon it, save the pecking of my beak every evening, and now there is not so much as the size of a nut remaining thereof; yet all the vengeance of Heaven be upon me, if during all that time I have ever heard of the man for whom you enquire. Nevertheless I will do that which is right, and that which it is fitting I should do for an embassy from Arthur. There is a race of animals who were formed before me, and I will be your guide to them." So they proceeded to the place where was the Stag of Redynvre. "Stag of Redynvre, behold we are come to thee, an embassy from Arthur, for we have not heard of any animal older than thou. Say, knowest thou aught of Mabon the son of Modron, who was taken from his mother when three nights old?" The Stag said, "When first I came hither there was a plain all around me, without any trees save one oak sapling, which grew up to be an oak with an hundred branches. And that oak has since perished, so that now nothing remains of it but the withered stump; and from that day to this I have been here, yet have I never heard of the man for whom you enquire. Nevertheless, being an embassy from Arthur, I will be your guide to the place where there is an animal which was formed before I was." So they proceeded to the place where was the Owl of Cwm Cawlwyd. "Owl of Cwm Cawlwyd, here is an embassy from Arthur; knowest thou aught of Mabon the son of Modron, who was taken after three nights from his mother?" "If I knew I would tell you. When first I came hither, the wide valley you see was a wooded glen. And a race of men came and rooted it up. And there grew there a second wood; and this wood is the third. My wings, are they not withered stumps? Yet all this time, even until to-day, I have never heard of the man for whom you enquire. Nevertheless I will be the guide of Arthur's embassy until you come to the place where is the oldest animal in the world, and the one that has travelled most, the Eagle of Gwern Abwy."