approcimatly 21 days
sit on the eggs
yes they do
no males also do it when the mother penguine goes to eat
10000 hours
no because the mother will squash the egg and cause it to die
for 21 or 22 days.
1 day
No, they do not. The eggs are buried in mounds of organic material (leaves, grass, etc.). Heat generated through decomposition of this material warms the eggs. The mother alligator stands close guard, but does not sit on or otherwise warm the eggs herself. it is right.
The female kakapo incubates her eggs for around 30 days.
Chipmunks do not lay eggs, they are mammals and give birth to live young.
Well to hatch any egg you need warmth. Either you let the mother hen (or a surrragate mother) sit on the eggs until they hatch, or you can incubate them. They usually take an average 21 days to hatch. It can be risky letting a hen sit on eggs, because some chickens (particularly silkies) will sit on the eggs for so long they forget to take breaks for food and water. All you can do is wait and see. If her condition is deteriorating too quickly. Take the eggs from her. Other than that, silkies are one of the best breeds for hatching and rearing eggs!
ostrich can sit very long time in her eggs. sometimes ostrich sit on her eggs until it hatch.