After an egg has been laid, it can stay in the nest for up to 2 weeks without spoiling, assuming the nest is dry and no bird sits on it. If a bird sits on the egg it will begin to develop. Even in warmer temperatures, an egg can be at room temperature and remain fresh due to an antimicrobial coating placed during the laying process, called "bloom."
Many cultures don't refrigerate eggs at all, as an egg can take on flavors from fridge contents.
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.
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.
30 Min
It takes 21 days for a chicken egg to hatch.
About 2-3 weeks
An unfertilized chicken egg that is not collected and refrigerated will eventually start to decay. You can put the egg in a glass of water, if it sinks to the bottom then it is still fresh.
it usually takes 24 days
a chicken egg is about 50g :)
The egg dinosoars layed eggs long before chickens