What a bird’s wings do Crossword Clue

 The answer to the crossword clue "What a bird's wings do" is FLAP.

Birds use their wings to fly, which involves flapping them up and down. The flapping of the wings creates lift, which allows the bird to stay in the air.

Here are some other possible answers to the crossword clue "What a bird's wings do":

FLY

SOAR

GLIDE

NAVIGATE

However, the most common answer is FLAP.