Let a hen handle it.
Why would you want to shake an egg particularly if it is incubating - the reply is a definite no I wouldn't shake an incubating egg
Incubating the eggs was necessary for their survival.
That is called a favourable condition or appropriate amount?
The platypus spends ten days as an egg incubating within its mother, until the egg is laid. This is the first stage.
Allow the hen to brood the egg, find a surrogate hen willing to brood, set the egg under another brooding species like a goose or duck.
A bird egg is hatched by heating, or incubating it and waiting until the chick hatches. The time it takes to hatch varies from species to species.
time and temperTURE
Absolutely nothing if you are not incubating the fertilized ones. There is no visible difference, no nutritional difference and no taste difference.
Once You get the egg you have to walk/run/cycle a long way with the egg in your inventory until it hatches an incubator - but it is a process that takes many important steps, monitoring temp and humidity. please google "incubating duck egg"
Darkness, warmth and dampness.
The mother hatches an egg The mother lays the eggs, sits on them to keep them warm while incubating, then feeds them when they hatch out.
Economic pressures refers to a time period in the economy of a country when indicators are not in a favourable condition