Do pigeons harm people or property?
Pigeon droppings can cause a variety of issues for buildings and people. In addition to being unsightly, the excrement corrodes buildings and kills vegetation when it accumulates in high enough volumes.
Additionally, accumulated droppings can contribute to the spread of histoplasmosis, which is extremely dangerous to the human respiratory tract. Pigeons also carry various parasites including mites, fleas, and ticks. Stored grains may become contaminated from the presence of pigeons. Large flocks sometimes cause collisions with aircrafts, as well.