Why didnt they hatch?

[PeeperKeeper99]

i had some eggs in the incubator, they were moving but they didnt hatch on 21st day. it has been 26 days, shouldi try again? why didnt they hatch?

 

[Sally Sunshine]

i had some eggs in the incubator, they were moving but they didnt hatch on 21st day. it has been 26 days, sh a ouldi try again? why didnt they hatch?

Peepers, Hello

I have my notes in an article https://www.backyardchickens.com/a/hatching-eggs-101

and this is a pasted from that article..... the links are a wonderful way to help figuring what went wrong... In your case I would guess its low temps..have you calibrated thermometers and hygrometers? but please refer to the above link in regards to Thermometers and temps....

My Links for additional information​

Eggtopsy: What happened to my egg?
https://www.backyardchickens.com/t/363717/eggtopsy-what-happened-to-my-egg-graphic-pictures​

"Shrink wrap" vs. "Sticky chick"?
https://www.backyardchickens.com/t/491421/shrink-wrap-vs-sticky-chick#post_6242987

Trouble Shooting Failures with Egg Incubation http://msucares.com/poultry/reproductions/trouble.html

http://www.poultry.msstate.edu/extension/pdf/troubleshooting_incubation.pdf
http://anrcatalog.ucdavis.edu/pdf/8127.pdf

This is also a great pdf with pics: paste link in browser search:
http://www.google.com/url?sa=t&rct=j&q=early%20emrbyo%20death%20%20incubation&source=web&cd=4&cad=rja&ved=0CDsQFjAD&url=http%3A%2F%2Fwww.thepoultrysite.com%2Fdownloads%2Fdownload%2F171%2F&ei=UllaUMXFHsmrygGnjoHICw&usg=AFQjCNGgYxCBYwBex31MS5w2McdnpH1zbw

ALSO this PDF at the last pages have a chart that shows what could have happened.... http://gallus.tamu.edu/library/extpublications/b6092.pdf
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