The black raven serves as a dove frightening tool doves can be a serious problem in both residential and city homes their disgusting corrosive pidgeon droppings ruin valuable buildings and their obtrusive cooing can lead to serious frustration it is a well known fact that pidgeons are carriers of various diseases salmonellosis cryptococcosis tuberculosis etc which are repeatedly detected in multiple species in addition to the risk of transmission of the disease the pigeons can also be