The eagle bird is known by its power, the sight's power, and its awe.

At the age of thirty years, the power of its claws begins to weaken and the wings cleave to its chest, it becomes difficult to fly for high-altitude, or to fly for a long time, and the strong pointed beak also weakens, and the continuation of this means its death inevitably.

This weakness makes the eagle can’t hunt any prey because the hunting depends on its strong claws in the pounce on the prey, In addition to the strength of vision from high altitudes.

Here the eagle shall be faced with only two choices, either give in to die, or re-strengthen his body and activity to live, but the second choice is not easy.
After the Eagle chooses to strengthen its body, it has to bear severe pain in order to stay alive. The eagle goes to the top of the mountain where its nest, and lives there for at least one hundred and fifty days, the beginning is by breaking its claws by beating them on the rocks.

And when the new claws grow, breaks them again.
And then it waits for the growth of the new claws, which will be stronger than it was before the first break process. Similarly be the case with its beak.

The final phase of the one hundred and fifty difficult days the eagle plucks its feathers even its new feathers grow, and wait for days and nights until the new feathers grow as if it was in its youth.

This new feathers work to strengthen the wing that will not stick to its chest anymore, the eagle starts a new life and, God willing, to live another thirty years.

Then the eagle again can catch the prey from above, and torn it to pieces by the sharp and powerful claws.