The term 'very large bird' can be summarized by two crossword solutions: EMU and GOLDENEAGLE. The EMU is a large, flightless bird native to Australia that stands up to 6 feet tall and weighs up to 90 pounds. The GOLDENEAGLE is a large bird of prey found in the Northern Hemisphere that has a wingspan of up to 7 feet and can weigh up to 15 pounds. Both birds are considered very large and are popularly featured in crossword puzzles.