Answer:
What do you fill with empty hands?
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
I have many feathers to help me fly. I have a body and head, but I'm not alive. It is your strength which determines how far I go. You can hold me in your hand, but I'm never thrown.
Upon me you can tread, though softly under cover. And I will take you places, that you have yet to discover. I'm high, and I'm low, though flat in the middle. And though a joy to the children, adults think of me little.
I have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.
Keep doing me to avoid lens dryness