Four wings I have, which swiftly mount on high,
on sturdy pinions, yet I never fly;
And though my body often moves around,
upon the self-same spot I'm always found,
and, like a mother, who breaks her infant's bread.
I chew for man before he can be fed.
Select a pack of riddles and try to solve it in an interesting way.
This riddle appears in the following downloadable PDF files: