30 - 35 Days
It depends on the species of swan but be careful with your pets because if it gets dog pwned it will never gestate amen.
A swallows egg takes 10-21 days to hatch from laying. 14-18 days is more common.
herring gull 26 days
36 days
Geese have a gestation period of 28-35 days.
No, gestation is development in the uterus. Eggs have an incubation period.
Geese have a gestation period of 28-35 days. They have a lifespan of 10-24 years.
The gestation period for parrots is 21 - 28 days.
Probably because they have no gestation period. Although their eggs have an incubation period.
The gestation period is 19-21 days from the time the tiels start sitting on the eggs.
a fish lays eggs so it doesn't have a gestation period
The gestation of sparrow eggs is 10-15 days and incubation is shared between the parents.
24 to 72 hours :)
11 to 13 days
There are many fish and amphibians for which the female lays soft-shelled unfertilized eggs, which the male then fertilizes. Because the fertilized eggs were never inside the female's body, one might say that there was no gestation period. However, all animals that have internal fertilization have some length of gestation period. For most animals, the gestation period is much shorter than the time between laying the eggs and the eggs hatching: for example, a chicken egg has a gestation period of one day, but the eggs do not hatch until 24 days after being laid. Monotreme mammals (platypuses and echidnas) have longer gestation periods and proportionally shorter distances between the laying of the eggs and the eggs hatching.
Cassowaries are birds, so they do not have a gestation period, as gestation refers to the length of a pregnancy. Cassowary eggs take between 50 and 60 days to incubate, or hatch.