My hen pip is hatching some eggs, but when I took out the eggs that she's not hatching which she has been on all day, they were not warm. she has been broody for almost two weeks of me constantly taking her and the eggs out, because I didn't want to deal with mix breed roos if we got any, but we have some pure breed eggs now. she has pecked all her belly feathers out and last week her belly was really warm, but doesn't seem to be any more. will the chicks still hatch, will I have to get a heat lamp?