Pigeons are among the most common nuisance birds in urban and suburban settings, favoring ledges, rooftops, signage, and parking structures as roosting and nesting sites. Once a location becomes established as a roost, flocks tend to return to it year after year.
Accumulated droppings can corrode building materials, create slip hazards, and harbor bacteria and fungal spores, making sanitation a genuine concern around entrances and walkways. Physical deterrents such as netting or spike strips installed by a professional are generally more effective and humane than repeated cleanup alone.