an egg incubator
yea nah
First you need to incubate the egg...
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
A guinea Fowl egg will hatch in about 26 to 28 days, depending on temperature and humidity.
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.