Incubation to 14 days is one week before a potential hatch for chicken eggs. Chicken eggs take 21 days from set to peep. Maintain an internal incubation temperature of 100.5 degrees with a humidity of +60% until day 18. On day 18 you should be increasing the humidity to about 80% until the chicks are out.
Typically 28 days.
18-21 days
The amount of time that beetle eggs incubate varies depending on how warm the overall temperatures are and the type of beetle that laid the eggs. Typically most beetle eggs will hatch in about 5 to 14 days.
Roughly 21 days.
Appx 30 days
It takes about 21 days.
14 hours or48 hours
You didn't give a specific type of heron in your question, but Great Blue Herons usually incubate their eggs for 26-29 days.
An American Robin will incubate her eggs for 15-17 days.
either 75,82 or 93 days
The eggs take 45 to 75 days to hatch.
Fertilised platypus eggs stay in the mother's body for around 28 days. When they have been laid, they incubate for another ten days before hatching. Echidna eggs also incubate for around 11 days.