Yes they do require different settings. I weigh mine to make sure they have correct humidity to hatch. After 18 years of hatching them, I have found that to be the most fail proof. Depending on the weightsi usually run them dry until hatching time, then get the humidity as high as possible 80% so they hatch out. After the external pip.important not to do that too soon.
They usually run about 80-90% fertile and out of that most of them hatch.
Hens are even better so long as they are not so big they crush the small eggs.
a man in the Uk has used pigeons to hatch themwith great success.
Thank you so much for this info. I put 20 eggs in the bator last week. Humidity is running 25%. Does that sound about right? Please explain the weighing system that you use to me. Thanks