On the Ruoergai grassland in winter, occasionally a large bird can be seen in the sky. Except for the tail, its whole body is dark brown, and it has wide wings. Sometimes it soars, sometimes hovering at a low altitude.It is mighty and domineering.

This is the white-tailed eagle known as the "tiger in the sky", so named because of the white tail feathers.

The white-tailed eagle is one of the largest raptors in existence. Due to their wide wings, they are extremely capable of flying and can fly close to the water surface for a long time to capture prey. Fish, birds, ducks, geese, seagulls, geese, voles, lambs, deer... can't escape its claws. It will even snatch the prey captured by other birds. It can be said that it has firmly mastered air and sea dominance.

The white-tailed eagle is widely distributed in Eurasia and is also the national bird of Poland, being engraved on the coat of arms of Poland.

Like othereagles, white-tailed eagles are also monogamous. They are faithful in love. They stay with each other "for life" when they find a mate, making nests in a fixed place to lay eggs and raise offspring together. They will not change partners unless one of them dies.