Humidity of duck eggs

[cathydyson]

I have a silkie x hen that is sitting on some fertile duck eggs. I heard that if the humidity isn't right the ducklings will struggle to hatch, do I need to do anything or should I let her be?

Also, is it safe for ducklings to be left with a silkie hen after they've hatched? will the fine feathers of a silkie hen suffocate them?

 

[enriquec]

Humidity isn't as important as temp. But more importantly, birds hatch eggs better than humans w technology, so nope you don't have to do anything