Anywhere from 21 - 28 days. Birds do not really have a gestation period as this word really applies when an embryo develops inside its mother. I assume you mean the time it takes the egg to hatch, which is called incubation time. This varies, roughly with the size of the bird. Small birds hatch quickly, the canary in only 13 days, and bigger birds take longer, e.g. 35 days for swans and 40 or more for ospreys.
The puma's gestation period is 91 days long.
Charolais tend to have a long gestation period, which is around 287 to 293 days long.
As with any breed, the average gestation period is 9 weeks.
Humans have an average gestation period (time of pregnancy) of 280 days.
The gestation period of a Dutch Belted is around 285 days long.
The eastern short horned lizard has a gestation period of 3 months.
It i normal for a female lizard to have a period.
The puma's gestation period is 91 days long.
The puma's gestation period is 91 days long.
The gestation period of a raccoon is 63 days.
The gestation period of the Springbok is 24 weeks.
Horses have a gestation period of 340 days.
The gestation period for a finch is 11-14 days.
Goldfish have a gestation period of 5-7 days.
a wolves gestation period is about 63 days yay
Lemurs have a gestation period of 54-68 days.
The gestation period of a barracuda is 10 - 12 weeks.