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3 months
Penguins are not born; they are hatched from eggs.
2-4 months
He will incubate the egg for up to two months until the female returns.
Your looking at around 3 days.
Emperor penguin chicks typically take about 65 to 75 days to develop before they hatch. After hatching, they rely on their parents for warmth and food, and they gradually grow and develop their feathers. The chicks reach full independence at around 5 to 6 months of age, when they can swim and forage for themselves.
2 months
i don't know for sure but i think 2-3 months
Most eggs take about 34-35 days to hatch. The first egg laid takes about a day longer to hatch than the second egg (33 days). They hatch about 1.5 apart.
4 hours.
Penguins are birds, they lay eggs, is your question haw long are the eggs retained?
There are many wild birds, and they are very different, so the hatch (note - hatCh) times vary depending on the species. For example, Ostrich eggs take 40 to 45 days of incubation to hatch, the Emperor Penguin takes 64-67 days, and most hummingbirds' eggs take only 8-12 days to hatch. Of course, if an egg is not incubated properly or it is not fertilized, it may never hatch -- however, it most likely could make a very nice omelette or souffle if it hasn't been sitting around too long :>) There are many wild birds, and they are very different, so the hatch (note - hatCh) times vary depending on the species. For example, Ostrich eggs take 40 to 45 days of incubation to hatch, the Emperor Penguin takes 64-67 days, and most hummingbirds' eggs take only 8-12 days to hatch. Of course, if an egg is not incubated properly or it is not fertilized, it may never hatch -- however, it most likely could make a very nice omelette or souffle if it hasn't been sitting around too long :>)