Killdeer eggs typically take about 22 to 28 days to hatch after incubation begins. Both parents share incubation duties, with the male often incubating at night. The incubation period can vary slightly depending on temperature and environmental conditions, but generally falls within this range

. The parents start incubating once all eggs are laid, which synchronizes the development of the embryos so that the chicks hatch around the same time despite eggs being laid over several days

. After hatching, killdeer chicks are precocial, meaning they are covered with downy feathers, have their eyes open, and can walk shortly after emerging from the eggs

. In summary:

• Incubation period: 22 to 28 days
• Both parents incubate eggs
• Eggs laid over several days but incubation starts after last egg is laid
• Chicks hatch precocial and are mobile soon after hatching