House sparrows are considered a pest bird because they eat agricultural products, their aggressive behaviors towards native birds, as well as how they spread diseases to humans and animals. House sparrows have been known to carry bacterial diseases such as Salmonellosis and viral diseases like West Nile Virus, Equine Encephalitis (EEE), and St. Louis Encephalitis.
House sparrows are able to spread diseases through their droppings and their nests. Bird droppings in large quantities can increase the risk of exposure to disease. Droppings don’t have to be touched or ingested for disease to spread. Droppings can cause disease through airborne particles.| Back |