So, I cracked two eggs for dinner yesterday and both had a network of red veins. Yes, they were developing. I collect my eggs every 2 days. And this egg was almost 5-6 day into incubation. I checked other 3 eggs they were also developed. I had a hen that was previously broody ( she has hatched her 3 chicks 2 week earlier) so I gave her three eggs. She's sitting on them every now and then. Temperature here is 42 degrees centigrade outside and maybe 38-39 inside the house. She's kept inside a room I am positive she's sitting on them quite some time (not all the time because she's also nurturing her chicks of previous hatch) and besides the room temperature is also 37-39 . Will they hatch ?