Pigeons are Monogamous

- Pigeons are monogamous and typically mate for life.
- Female pigeons can reach sexual maturity as early as 7 months of age.
- Pigeons build a flimsy platform nest of straw and sticks, put on ledge, under cover, often located on the window ledges of buildings.
- Eight to 12 days after mating, the females lay 1 to 3 (usually 2) white eggs which hatch after 18 days. Condition at Hatching: Helpless, with sparse yellow or white down.
- Chicks fledge (leave the nest) in 25-32 days (45 days in midwinter).
- The male provides nesting material and guards the female and the nest.
- The young are fed pigeon milk, a liquid/solid substance secreted in the crop of the adult (both male and female) which is regurgitated.
- More eggs are laid before the first clutch leaves the nest. Breeding may occur at all seasons, but peak reproduction occurs in the spring and fall.
- A population of pigeons usually consists of equal numbers of males and females.
- When populations suddenly decrease, pigeon production increases and will soon replenish the flock.
- In captivity, pigeons commonly live up to 15 years and sometimes longer.
- In urban populations, however, pigeons seldom live more than 3 or 4 years.
- Natural mortality factors, such as predation by mammals and other birds, diseases, and stress due to lack of food and water, reduce pigeon populations by approximately 30% annually.

Text from website  https://ovocontrol.com/pigeons/