The time it takes for a bird egg to hatch varies widely depending on the species. Generally:

• Small songbirds typically incubate their eggs for about 10 to 14 days before hatching

• Medium-sized birds like woodpeckers and pigeons usually take around 12 to 18 days

• Larger birds such as ducks, chickens, and turkeys have incubation periods ranging from about 21 to 30 days

• Raptors (eagles, hawks, owls) generally take 30 to 50 days to hatch

• Very large seabirds like albatrosses and penguins can have incubation periods lasting from 50 up to 80 days or more

The incubation period starts when the parents begin warming the eggs, which may be immediately after laying or after the entire clutch is laid, affecting hatching synchrony

. In summary, bird eggs typically take anywhere from about 10 days to 80 days to hatch, with smaller birds hatching faster and larger birds taking longer