Small air sacs

[CocoPopz]

So I’ve candled today which is day 11. I’ve noticed on some of my eggs the air sac looks small for day 11, and the chicks don’t look as far developed as the others. Is this probably because they was older eggs? Also small air sacs usually caused from high humidity? Which doesn’t make sense as my humidity has been on the lower end between 20% being lowest and 40% being the highest. Any advise on what to do to get them how they should be. Thanks

 

[JaeG]

Make sure you move your eggs around to different positions in the incubator regularly as there are always warmer and colder spots. Temperature can impact how efficiently eggs can lose moisture, so that's one factor to keep in mind. If the temperature is a bit low then they won't lose as much moisture. If your humidity is as low as you've measured then I'm sure they'll be fine.