an egg incubator
First you need to incubate the egg...
Typically 28 days.
you will more than likely still incubate the egg
18-21 days
It is unknown
Do you mean, can a rooster lay an egg? The answer is no. Only hens can lay an egg. Do you mean, will a rooster incubate an egg till it hatches? The answer is no, only hens incubate the eggs. Occasionally a rooster that doesn't know any better will sleep in the nestbox but he is not there to incubate and could actually break and eat the egg instead. Do you mean, will a rooster chick hatch out of an egg? Yes, both roosters and hens come from eggs.
Roughly 21 days.
99.5 degrees Fahrenheit
Sit on it(incubate) /place int in hot water.
She may have decided to abandon her egg, maybe try to incubate it or find a substitute mother.
No. You can incubate an egg in a suitable controlled oven but the egg will have to be fertilized first if it is to hatch. The male bird fertilizes the egg inside the female before she lays the egg.