day 12

Hi all! I'm wondering if the air sacs for some of these are too small for day 12? Humidity has been between 30% and 55% (I let it fall down to 30% before bringing it up to 55% again, usually twice a day). Just wondering if I should decrease the humidity for the coming days. Looking forward to...

My green Americana ee's in incubator weigh anywhere from 47-60 (eggs consisting of mainly one mother, maybe two larger ones of eight eggs from other hen same breed but she's just visibly larger hen) i was getting mainly 50-52 grams on average and i weighed other ones i have set side not...