Crossword Genius

Builder of elaborate nests (9)

Ross

I believe the answer is:

bowerbird

(Another definition for bowerbird that I've seen is " Aussie singer".)

I've seen this clue in the Newsday.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.