Large air sack is this normal?

[Tracy the chick]

I candled my egg today after recieving my new brinsea candler lol. Its day 4 and the air sack looks really big like nearly have the egg! I also saw a little black dot in the middle of the egg what could that be? Im a first time hatcher after getting my brinsea bater off my husband for xmas

 

[Tracy the chick]

Ive looked on line and its says too big air sack usually means my humidity is too low. Does this sound right? I dont know what my humidity is. Bater has 4 channels, the manual says fill 2 channels up with water and on day 18 fill the other 2 up also.

 

[nurse_turtle]

If it's only day 4, are you sure it's not the yolk or fluid-sac that you're seeing? I'd be willing to bet you're seeing the yolk sac or amniotic fluid. The air cell is at the large end of the egg.
https://www.backyardchickens.com/forum/viewtopic.php?id=261876&p=1
Check these pics.

 

[Tracy the chick]

Quote:
Yep your right, phew! I looked at them candling pictures and mine was on there. Thanks for that i feel loads better now

 

[bairo]

lol, happens all the time. I usually tell 1st time hatchers to wait until day 6 or 7

 

[nurse_turtle]

Mark that post with all the candling pics. I promise you'll need to look at it again.

 

[Tracy the chick]

Quote:
Yes ive saved the post thanks. Xx