Air pocket

[topshot]

Have bobwhite eggs 7 days into incubation.  Candled 6 of 120 tonight, all fertile and lively.  One thing though...the air space sure seems awfully small.  Running about 55% humidity in a still air.  Anyone care to offer words of wisdom on how large the air pocket should be at this stage of the game?  I have never paid much attention to it this early in incubation before, and have had good hatches so while I will not lose sleep over it, I am curious.

[stewaw]

That early in the incubation cycle a small air sac wouldn't concern me.  Candle again in 7 more days and it should be a little larger.

Luck!
David