Pigeons are one of the most common birds in urban areas, where they are attracted to discarded human foods and find plenty of roosts and nesting sites on the flat rooftops and ledges of buildings, bridges, and overpasses.  Pigeon droppings are usually just a nuisance; but, if left to accumulate, could transmit diseases to humans or cause structural damage to buildings or bridges.

Physical barriers usually work to keep the pigeons from landing or nesting where they are unwanted.  Home or building owners can use netting, fishing line, or barriers to block access to a roost or nest site.  Also, creating a greater-than-45 degree inclined slope on ledges or other flat surfaces make it hard for pigeons to land.  Many safe and effective commercial products are also available including plastic or metal bird spikes.  Using sticky products is not recommended as these products can get on skin and feathers causing on-going problems for the bird.  If pigeons are roosting on a utility wire or other area where they can't be easily blocked, a weatherproof bird sound device that plays bird alarm or distress calls may chase them away.  More information on nuisance pigeon control is available from the USDA Wildlife Damage Management Library.