The eagle wasn't always the eagle. The eagle, before it became the eagle, was Ukhatangi the Talker.
Ukhatangi talked , and talked... It talked so much, it heard only itself. Not the river, not the wind, not event the wolf.
The raven came and said : "The wolf is hungry. If you stop talking you will hear him. And the wind. And if you hear the wind, you will fly."