Can humidity be too high during hatching?

Discussion in 'Incubating & Hatching Eggs' started by fowlwoman1, Sep 2, 2008.

  1. fowlwoman1

    fowlwoman1 Chillin' With My Peeps

    Mar 29, 2008
    Wenatchee, WA
    That is my question. Will the chicks die of humidity poisoning if it's say 90%[​IMG]? I keep hearing that 60-70% is optimal, less than that, they will stick to the shell, but what if it's higher?
  2. deerman

    deerman Rest in Peace 1949-2012

    Aug 24, 2008
    Southern Ohio
    this will cause to slow evaporation of moisture from the egg, so you will get sticky chicks,and to small of a aircell at hatching time. 60% humidity then 70% last 2 days.
  3. BirdBoy88

    BirdBoy88 Angel Egg

    Dec 26, 2007
    This is week 2 of hatching for me and my humidity has been staying between 65 and 72 %
  4. klf73

    klf73 Mad Scientist

    Jun 1, 2008
    I set mine for 55-60% the last 3 days after I was getting real wet chicks with 65-70%. After the first chick pips my humidity naturally increases to the 60's or low 70's. When I had started with the 65-70% my later chicks were hatching extremely wet, or not hatching and upon opening were fluid filled, also the humidity would jump to 85-90% which I believe was my problem. This works for me in my environment. I have not had a drowned chick since, nor have I had a stuck chick. I have 2 hygrometers so I know they are accurate.

  5. MissPrissy

    MissPrissy Overrun With Chickens Premium Member

    May 7, 2007
    Forks, Virginia
    I have been having 100% hatches of my own eggs.

    I have 70%+ on shipped eggs in the last few shipments.

    Day 1 - 18 = 40- 45% humidity.

    Day 19 - hatch = 70% humidity.

    I don't know about poisoning but 90% humidity is too high for chickens because moisture can't escape in the proper ratio for the air cell to grow.

    My waterfowl hatch in 85% humidity from day 26 - hatch. 90% is too high for them as well.
  6. Three Cedars Silkies

    Three Cedars Silkies Overrun With Chickens

    Apr 17, 2008
    Gainesville, Fl.
    Yes, 90% is too high. The egg can't lose moisture properly during the last 3 days and the chicks are likely to drown.
    1 person likes this.
  7. MagsC

    MagsC Queen Of Clueless

    Jul 27, 2008
    That was my understanding as well, that the chicks will drown if ths humidity is too high.

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