I had no choice but to help mine hatch.....the mom wanted to eat the yolk, so she started peeling the chicks out herself very violently. So I took them away for about 5 hours , then put them back, and she left them in the cold and didnt tuck them under her.
I kept them in a brooder at 96 - 98 degrees for 2 weeks. Then lowered the temp. They lived on my nightstand at night, and in the kitchen with me during the day. It was a long 2 weeks, but they are happy and healthy now (one I accidentally killed by tube feeding NEVER tub feed a chicken I horridly found out. I pushed a little to fast....and it drowned.....I tried everything to save it. LEARN from me PLEASE. It was the most awful experience ever! I cried so hard! A Very Hard Lesson To Learn!)