Good Morning! I started for the first time incubating using the sytrofoam type of incubator with a fan and automatic turner. Can be seen at http://www.mcmurrayhatchery.com/product/picture_window_incubator.html I started with 36 "fertilized" eggs from a farm down the road. Out of the 36 15 were hatched and doing well - yeah! 9 had zero development (i assume they were unfertalized) and 12 were developed, but after 26 days, did not hatch. Is that normal to have the 12 developed but unhatched eggs? Also- the eggs hatched over a period of 4-5 days. I thought they would all hatch within 1-2 days. Do you have any suggestions or comments - I greatly appreciate your input. I love this forum!