Answer:
They come to witness the night without being called, a sailor's guide and a poet's tears. They are lost to the sight each day without the hand of a thief.
In the sun it likes to play; In the rain it goes away; Walk or run it always follows; In the mud it always wallows.
What instrument can you hear but never see?
I know a word of letters three, add two and less there will be.
In birth I spring forth, in life I unfold. In death I wilt and die, but rebirth restores all.
People take me on walks and I run and have fun. What am I?