Roughly 21 days.
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.
Hens will not sit on eggs unless they are "broody" - which is when they are actively attempting to incubate a nest. Hens will not just sit on every egg they lay.
It takes about 24 hours for a hens to make an egg and after she has started to lay them them regularly she with lay 1 egg a day.
Roosters don't lay eggs. Hens do.
Once mature, it usually takes about 24-48 hours for a hens body to produce a single egg. This time will increase as the hen ages.
One ostrich can incubate up to 25 eggs, but most nests have even more because of the extra ones laid by "minor hens.
Most egg producers will cull the flock when they reach about 18 months old.
to incubate an egg you cant do it without machines.there are some wicth keep them warm untll they hatch You can incubate eggs without machines but you will have to keep the eggs warm enough probably around 106F (the body temperature of hens). You will have to rotate the eggs periodically(the hen normally does this). If you don't rotate the eggs correctly your chicks may hatch but may not. Chicks that hatch from eggs that haven't been rotated enough will most likely have birth defects and won't live very long.
either 75,82 or 93 days
well to properly take care of it, you must not pop the air bubble that is on the top of it and you have to incubate it.