Feral Pigeon

The Feral Pigeon, *Columba livia domestica*, is a descendant of the Rock Dove. Adults are typically 30-35 cm long with a wingspan of 60-70 cm, weighing 280-550 grams. Their plumage is highly variable, but wild-type coloration includes a dark grey body, iridescent green and purple neck plumage, two prominent black wing bars, and a white cere. They reach sexual maturity at 6-7 months and exhibit indeterminate breeding, producing 4-8 clutches per year, each with 1-3 (typically 2) eggs. Incubation lasts 17–19 days, and fledging occurs 30–37 days post-hatch, with offspring often breeding within their first year. While average urban lifespan is 3-5 years, individuals can live up to 15 years under optimal conditions.

Feral pigeons display strong philopatry and colonial social structures, organizing into flocks ranging from a few individuals to several hundred. They are primarily diurnal, foraging and defending territories during daylight hours. Communication involves a variety of cooing vocalizations and visual displays, particularly during courtship and territorial disputes. Their feeding ecology is highly opportunistic, consuming grains, seeds, human refuse, and readily accepting handouts. High populations can cause significant structural damage through guano accumulation, which is highly acidic (pH 3.5-4.5) and accelerates corrosion of building materials like steel, stone, and paint. They are vectors for over 60 diseases transmittable to humans and livestock, including salmonellosis, psittacosis, and cryptococcosis, and host numerous ectoparasites like mites, ticks, and fleas.