I'm White Inside

I don't have legs. I don't have arms.

I don't have ears. I live in the water.

I can swim well.

Who I am?

I am the nearest planet to the sun.

I am the smallest planet in the solar system.

Who am I?

I am small. I have feathers.

I lay eggs. I can sing and fly.

Who I am?

Can you name the four days of the week that begin with letter "T"

I am the fifth planet from the sun.

I am the fastest spinning planet in the solar system.

Who am I?