John Wesley Powell John Wesley Powell was born 24 March 1834 at Mount Morris in western New York state. His parents moved to Illinois, where he was educated at Wheaton and Oberlin colleges.
Whereas fertilized chicken eggs usually take exactly 21 days to hatch, most duck eggs take 28 days, apart from Muscovy ducks. As a general rule of thumb, the eggs of Muscovy ducks take 35 days, but once again, it can vary slightly depending on conditions.
The incubation period varies by species and generally takes about a month. When the ducklings begin to crack through their shells at the end of the incubation period, they should all hatch within 24 to 48 hours. Some eggs may fail to hatch.