Crossword clues for the word: BIRDBRAIN The word BIRDBRAIN has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for BIRDBRAIN Showing 1 to 6 of 6 results Clue(s) "Flighty, thoughtless one." Airhead Crane's cranial content Dimwit Dumb cluck Dumbo