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Air sack size

Discussion in 'Incubating & Hatching Eggs' started by skiwee, Jul 12, 2016.

  1. skiwee

    skiwee Out Of The Brooder

    Apr 5, 2016
    I have a 20 day old duck egg whose air sac doesn't look all that big. When I look online for correct sizes most show that it stays pretty much the same size until day 23 when it starts to enlarge rapidly. Is that true? I started misting it the other day hoping that helps but not sure that sac is going to get as huge as some I've seen here. Should I be worried?

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