Pigeons, also known as Rock Doves, are monogamous and will lay one to two eggs which hatch within eighteen days. Pigeons are filthy birds, causing disease and damage. Pigeons may carry diseases such as cryptococcosis, toxoplasmosis, salmonella, food poisoning, and more. Also, their droppings may harbor the growth of fungus, which causes histoplasmosis. Call Major Pest Control Exterminator Edmonton.