Well we are hatching our second batch of eggs, the first batch we got 3 out of 15, many weren't fertilized and only 2 others were fully developed but didn't hatch or pip. After posting someone suggested doing lower humidity watching the air sacs and marking them at first then raising at lock down, I did that, the air sacs were just like the pictures for this second time (we got 20, at lock down we had 14 because we took out 6 that were not fertilized) well one hatched yesterday night, today I candled them because still no pips. I took out 5 more, 3 weren't fertilized two stopped growing mid way. The ones I left I was unsure but saw no movement in any no internal pips if we only get one chick will he/she be ok by its self?