my baby chicks

[clucking with my chicken]

hi I have eggs in my incubator and they won't hatch
I have it on 39 degree
and they have developed but its been a day over due and iv never ever seen a heart beat but see development

 

[Keeperofmunchkins]

What is your humidity now and what was it throughout the incubation?
Are you sure none have internally pipped? Listen for cheeping. If you can't hear anything try removing one egg and candling it and take a photo if you can. Post the photo and we can get a better idea of what's going on. Or just describe what you can see inside the egg if you can't get a photo.

 

[Peppercorngal]

If your temperatures varied it can take up to 26 days for the eggs to hatch. Be patient if you can!