Answer:
A hill full, a hole full, yet you cannot catch a bowl full.
The more of it there is, the less you see.
The more holes you cover the lower it goes.
What kinds of men are always above board?
My sides are firmly laced about, Yet nothing is withinΝΎ You'll think my head is strange indeed, Being nothing else but skin.
I have a tail. I can fly. I'm covered in colorful feathers. I can whistle and I can talk