Overdue!!!! Help!!!!!

[OreoPlymothRock]

Hi, we are hatching 3 duck eggs and 2 goose eggs and we had them for 37 days. The ducks are supposed to hatch at 35 to 36 days and the geese 30 to 36 days. They are late. Me and my siblings are tempted to crack them open but we want to wait longer. Is this normal? We cracked several of them that turned dark and they were rotten. These eggs are nice and normal. Any Tips? And again, is this normal???

 

[nurse_turtle]

I think duck and goose eggs hatch at 28 days incubation. If you're at 37+ days, I imagine they are not going to hatch. Candle them all to look for signs of life and then start opening them gently.