Feral pigeons are derived from domestic pigeons that have returned to the wild, originally bred from the wild rock dove which naturally inhabits sea cliffs and mountains.
Pigeons breed all year round and can nest up to 6 times a year. They build flimsy nests out of twigs in sheltered areas such as disused buildings and enclosed positions out of the wind. They lay 2 eggs that hatch out after about 20 days. The chicks (squabs) become fledglings after 30 days and can breed after 6 months.
Feral pigeons live for roughly 5 years.