19. What animals alert Ray to the fact that the Tripods' shields are down?
From Quiz War of the Worlds
Answer:
Birds
In Boston, Ray realizes that the aliens are starting to slowly die and the Tripods are crashing themselves. When a flock of ravens begin circling one Tripod, Ray alerts some troops and they shoot the Tripod down. Ray and Rachel finally arrive at their destination and they reunite with Mary Ann, Tim, and Rachel and Robbie's Grandparents. We also find that Robbie survived the explosion and made it to Boston before they did.
"From the moment the invaders arrived, breathed our air, ate, and drank, they were doomed. They were undone, destroyed, after all of man's weapons and devices had failed, by the tiniest creatures that God, in His wisdom, put upon this earth. By the toll of a billion deaths, man has earned his immunity, his right to survive among this planet's infinite organisms, and that right is ours against all challenges. For neither do men live nor die in vain."