Domestic pets aren't the only animals to be affected. Researchers at the University of Guelph and Acadia University found that fireworks can disorient flying birds, even causing some to abandon their nests. Scientists also discovered that the day after fireworks, hens show extremely low egg production with an increase in malformed eggs.
The town of Collecchio, in the province of Parma, Italy, was concerned enough by these effects that their local government introduced legislation to mandate the use of quiet fireworks as a way of respecting animals and reducing stress. As crazy as it sounds, these fireworks do exist! The Italian company Setti is just one company that sells products to create a light show without the loud noises.