Question about hatching eggs

[Lisauz]

im fairly new to the whole hatching game. We collected our chickens eggs after both nests got to about 12 because it didn’t seem that they were going to be sitting on them. We then ordered an incubator and after about three days and 6 eggs later it arrived. We did what we the instructions told us to do and the incubator was up and running automatically turning 30 eggs. We candled the eggs at day 7 but I couldn’t tell much to be absolutely sure and didn’t want to make mistakes. So we looked a few more times. During this time the hens layer two more eggs for one 5 eggs for the other and stated sitting. Dumb girls. So on day 17 I checked all the eggs really really good in pitch black and found only a few that I could 100% say were a no go either were not fertile or never developed. My husband and I decided to switch out the eggs in the incubator prior to lockdown for the eggs the chicks were sitting on. We split the eggs up 11 under one hen 10 under the other. The one hen had all her eggs hatch except one and her babies seem to hatch around day 19 and 20 incubator time. It is now day 21 and all the eggs under the other hen haven’t done anything as far as I can tell. She got up today to do her business quick and they haven’t even pipped. I can’t understand why. Both nests are beside each other and it’s not like it’s the middle of winter and they froze because she was gone two hours. Any ideas or is she just cooler than the other mama

 

[Hopethehen]

Does she leave for two hours every time?
Broody hens are only supposed to leave for 10-20 minutes a day.
Also, I don’t think hens really get broody in the winter because when their body temperature drops, it breaks the broody. That’s why putting an ice pack under a broody hen will break her.

 

[Lisauz]

No only for about 10 minutes and I was using winter as an example they are supposed to be hatching now.

 

[chickens really]

Keep waiting..Maybe today they will hatch?

 

[Lisauz]

No eggs hatched for her. I did an egg dissection on a two eggs. On the baby looked perfectly fine it just was dead it never internally pipped. Another was not as developed as it should have been. She still has her later eggs the ones she payed after we took her original 13 so maybe some of those will hatch. They are due any day.

 

[Lisauz]

Last of her chicks hatched out of all her eggs four hatched