I set 6 silkie eggs 4 days ago and all are growing. I also set 9 cochin eggs I got through the mail and I could see development for sure in 5 of them. the others were pretty dark and hard to tell. I have 14 more silkie eggs that I set the day before yesterday and I could already see some of them were starting to develope but I will candle them in a few more days. I just love my new bator! Firtility on the first set of eggs is 100% so the boys are still doing there job! LOL JEN