Crossword clues for What birds do in spring. 4 letters:NESTWhat birds do in spring.ROBINSpring birdROBINSSpring birdsROBINBird of springROBINSBirds of springROBINBird associated with springNESTERSBirds in the spring.NESTERBird in the spring.ROBINBird symbolizing the arrival of springROBINSBirds that are signs of spring