An estimate would be 20-25 days.
I don't know if this helps, but an egg will last 7 times longer in the refrigerator than at room temperature
Guinea and chicken eggs can not be refrigerated and stay fertile.
1 week
an Ovum You probably have several of them in your refrigerator right now. Have a look at a chicken egg.
The egg, 1st of all because there were eggs long before birds, but if you mean a chicken's egg then it is still the egg. This is because when a new species evolves, the egg is say, given birth to a sub-chicken, and the new species (chicken) is inside the egg, which is techically now a chicken's egg.
Nothing, as long as it is not rotten, it is just like eating a chicken egg. A chicken is a bird.
Eggs left warm will age in one day what it would take 7 days in refrigerator to do. If an egg smells fine, the color is normal, and the yolk is still intact, then the aging process has not destroyed it.
a week
The egg. Dinosaurs laid eggs long, long before chickens existed.
The egg came first... kind of. Basically, a long, long time ago two birds that weren't really chickens created the first chicken egg.
It takes 21 days for a chicken egg to hatch.
30 Min
The eggshell and egg white are formed first within the chicken's reproductive system. The egg yolk is added last before the egg is laid.