Hello all! I am new here and really excited to learn from all of you. I am very new to hatching chickens and would love to hear your best tips! I have incubated two batches of chicks and unfortunately only been able to successfully hatch 3. Some eggs did not hatch at all. 3 hatched, then died soon after. Those three in particular had what I think to be their yolk sack still attached. While it looked like they were going to be absorbed (they shrank in size), they never did and the chicks didn't make it. Thoughts?