The term "gestation length" refers to mammals. Pheasants are birds, not mammals. So the number you are looking for is more commonly referred to as "time to hatching" or perhaps "incubation length."
No, gestation is development in the uterus. Eggs have an incubation period.
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.
It depends on the species. Some have a gestation period of less than 3 to 5 days while others have a gestation period of over a week or two.
The average gestation period for penguins is 63 days. After the female lays the eggs, she then passes them onto her mate to keep them incubated.