feathered oof-bird

noun1

1. •
   (slang, old-fashioned) Any large, plentiful source or supplier of money.

   • And didn’t Conklin say ‘Hah! Hah! Hah! I want gold!’ or words to that effect? And didn’t you tell him that the pawn shop that he has there is the home of the feathered oof-bird?” — 2015