Birds can cause various types of damage and safety concerns to houses and properties. Their droppings, which are highly acidic, can erode roofing materials, gutters, and paint, leading to costly repairs. Nests built in vents, chimneys, or eaves can obstruct airflow and lead to fire hazards or ventilation problems. Birds may also cause damage by pecking at wooden structures or roofs, leading to deterioration over time. Additionally, the accumulation of bird droppings can pose health risks, as they may contain pathogens that cause respiratory issues or other infections.