Answer:
He's small but he can climb a tower.
Take one royal word in the plural and make it singular by adding one letter
What can be white and yellow at the same time?
I am the red tongue of the earth, that buries cities.
The part of the bird, that is not in the sky, Which can swim in the ocean and always stay dry. What is it?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.