Hello Everyone, This is my second year incubating Rhode Island Reds, Red Stars, and Cuckoo Marans. Last year, I lost on average 20% of the eggs. This year, with the same incubation set-up, I am loosing 90%. It does not seem to mater whether I use a converted refrigerator turned into a warmerator warmerator or the styrofoam still air incubator. I have egg turners in both and am loosing clutches incubated in both units. I have cleaned and aired both units recently and when I cracked the unhatched eggs yesterday almost all the chicks had developed to the point of internalizing the egg yolk. I had 10 chicken eggs and 9 of them were 18 to 20 days incubated. Not one of them started pipping. Four weeks ago I started 25 guinea foul eggs and 8 indian runner duck eggs. At 10 days of incubation I removed 10 guinea eggs and 1 duck egg for non-development or death. When I opened up the guinea eggs 2 had not developed at all and 3 more had died at about 10 days. Seven had developed to the ready to hatch stage and not even pecked a hole in the shell. The other three pecked their way out and have since died - their feet were curled up and never seemed to work right. Several ducklings pipped but they have not survived. This year with well over 100 eggs going into the incubator I have 8 pullets and 4 roosters that have survived. The Red Stars with their hybrid vigor have done the best so far. Any assistance you can offer would be most appreciated.