Hi! I'm brand new to hatching my own chicks rather than using Mama bird I set my eggs 21 days ago. On day 7 I Candled and discarded the non fertile eggs. Candled again on day 14 and my remaining 11 eggs all looked good. I did not candle on day 18 but went into lockdown and had my first pip on day 19. I had six brown eggs and five blue/ green eggs that all came from mine and my parents birds. I just have a little Giant still air incubator with an auto turner but no fan. I kept humidity between 50-55 approx during day 1-18 then up to 60-70 as of day 18. Temp stayed pretty consistent around 100-101. Heres what I find interesting..... Between day 19-20 all six brown eggs pipped and hatched and I have six healthy babies however NONE of my blue eggs have pipped at all or have chirping etc. i candled two tonight ( day 21) and don't see movement and they basically look like they did on day 14... Shell is only about half full. Any idea why those particular color eggs might not have hatched? I was going to leave a couple more days to be sure but really saw no signs of life at all. Thanks so much!