I just did my first incubation (that I personally managed, my family did them before when I was really little) and I did not do a good job with the heat and humidity. (Partially because the incubator was years old, also just inexperienced) I really want the chicks that made it to do well—this...
I am a teacher hatching for the first time with 12 eggs. 3 did not look viable after 7 days when we candled. At 14 days the other 9 seemed ok but since we were in a classroom during the day it was hard to see much when we candled except for a dark shadow that was growing. Day 18 fell on Memorial...