What is the breeding behavior of mourning doves? Please include details about their mating rituals, nesting habits, egg-laying patterns, and any parental care given to the young. How often do they breed in a season, and what environmental conditions influence their breeding?
Answer
Mourning doves (Zenaida macroura) exhibit a distinctive breeding behavior characterized by courtship displays, nest building, and parental care.
Courtship:
- Mating Rituals: Males perform intricate courtship displays to attract females. This includes cooing, puffing up their feathers, and bowing.
- Flight Displays: They engage in flight displays, characterized by a series of shallow dives and a distinctive wing sound that can draw attention.
Nest Building:
- Nesting Sites: Mourning doves typically choose nesting sites in shrubs, trees, or on ledges, relying on the camouflage of their nests to avoid predators.
- Materials: The nests are primarily constructed from twigs, grass, and sometimes human-made materials, forming a simple, loosely built structure.
- Reconstruction: Nests are often reused and refurbished in subsequent breeding seasons.
Egg Laying:
- Clutch Size: The average clutch size consists of two eggs, which are typically laid a day or two apart.
- Egg Characteristics: The eggs are white or pale cream, with an incubation period of approximately 14 days.
Incubation and Development:
- Parental Roles: Both male and female doves share incubation duties, with the female taking the majority of incubating shifts during the day and the male at night.
- Hatching: Once hatched, the chicks are altricial, meaning they are born helpless and reliant on parental care for survival.
Fledging:
- Development: The fledglings leave the nest about 12 to 14 days after hatching. Before this, they are fed a special substance called “pigeon milk,” produced by both parents.
- Parental Care: After fledging, the young doves continue to be cared for by their parents for a few more weeks as they learn to forage and find resources.
Breeding Cycle:
- Reproductive Frequency: Mourning doves can breed multiple times a year, often producing several broods in a breeding season, which typically spans from spring to late summer.
Territorial Behavior:
- Defending Nest Sites: Males may become territorial during the breeding season, defending their nesting areas from intruders, but they generally are not aggressive towards humans or larger animals.
This comprehensive breeding behavior ensures the success of mourning doves in various habitats, from urban areas to rural settings.