My Austrolorp has set twice this summer... well, three times if you include her noble attempt to hatch golf balls and me sneaking babies under her during the early spring. The second hatch only 1 survived out of 4. I blamed myself for handling the eggs too much. I candled daily and didn't know about the 'lock down period' where you're not supposed to touch them at all. Anywho, she just sat on 8 more eggs and I vowed not to touch them except for 2 candlings just to make sure we didn't have any duds. Day 5: I candled and had 1 dud, so I was down to 7. I candled at day 14 and everything looked good. Day 17 she pushed one of the eggs out of the nest. So I was down to 6. We began hatching late on the 18th day. I saw 4 pips and decided to let nature take it's course and I went to bed with high hopes. The next morning I had 2 chicks. 2 smashed eggs with dead chicks (These were the 2 that had pipped and I saw their little beaks moving so I know they were alive at one point) and 2 eggs that never hatched. I opened the 2 that never hatched and the chicks were fully developed, yolk sac absorbed... I'm dumbfounded. Could I have done anything differently?