A local breeder said that they usually hatch at 29 days. So I set the incubator at 99.5 and 68-70% (bc she said they need high humidity). Today the incubator said we have 10 days left. I attached three eggs so you can see the difference.
This is my first time hatching eggs. We have four duck eggs in the incubator. Last week we candled for the first time, and saw amazing life-it was cool. Yesterday we noticed one of the eggs was darker than the rest (the whole egg). Why do you thing this is happening?