On the telephone poles and on roof-tops. Feral pigeons, that s what you see.
Pigeons carry a multitude of diseases.
If you feed the pigeons you are contributing to the health risks associated with them. Pigeons are a perfect mechanism for spreading disease because they travel great distances, harbor over forty types of parasites and can host internally over sixty types of infectious diseases. Remember, these feral pigeons defecate and leave dropping everywhere they roost. Airborne spores from drying feces in air ducts and vents can settle on exposed food and transfer disease. Infection from pigeon feces is very common.