Answer:
They come out at night without being called, and are lost in the day without being stolen. What are they?
What has a head yet it never weeps, has a bed but never sleeps, can run but can not walks, and has a bank but not a cent to its name?
I reach for the sky, but clutch to the ground. Sometimes I leave, but I am always around
What is born on the ground but floats to the sky, to be returned back again from the clouds up high?
A tower at the root of all confusion.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.