Clutch hatching on different days?

Discussion in 'Incubating & Hatching Eggs' started by Headgear, Sep 21, 2012.

  1. Headgear

    Headgear Out Of The Brooder

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    Jul 16, 2012
    West Harrison, Indiana
    I have a clutch of Black Copper Marans eggs hatching. Out of 14, 8 hatched on day 21 (yesterday) with two more pipped as of last night. I haven't looked yet today but I would bet that one or two of the remaining unpipped eggs have gotten started last night. I bought these eggs from lady here locally. She said that they were all collected over a four or five day period and they were all set at the same time. What causes some of them to hatch later than the others?

    FYI, I had a them in a new Genesis Hova-Bator, with an automatic turner till day 19. The humidity was +/- 45% and the temperature stayed very constant at 99.8 At day 19 I put them in another Genesis without the turner to hatch and raised the humidity to 65% and again the temperature was very steady. Any ideas?

    Thanks
     
  2. Double Laced

    Double Laced Chillin' With My Peeps

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    Sep 11, 2012
    Yorkshire
    One of the things that causes this is when eggs are left in the nest for a few days rather than being collected, they are sat on and kept warm while hens lay new eggs in the same clutch / or / all you need is 1 or two birds that sleep in a nest box and incubation can start on a few eggs for a day or two before they are collected.

    Also with some breeds is is not unusual for a hatch to last two or three days, happens a lot with my barnevelders. When i raise hybrids they all seem to hatch within a few hours of each other.

    Do you use a incubator with a fan, Hot and or cold spots can develop leading to a sporadic hatch.
     
  3. Headgear

    Headgear Out Of The Brooder

    33
    1
    24
    Jul 16, 2012
    West Harrison, Indiana
    Yes the Genesis has a fan and I put all of the eggs in the center just to be sure. The lady I got the eggs from said that see collected them eggs twice a day but I noticed that she had them in her garage and the temperatures here were running in the mid to high 80's. I think I would have kept them in the basement where it was cooler and more stable.

    Eight of the 14 hatched, two died when they were halfway pipped and I haven't opened the others yet to see what happened with them.

    Thanks
     

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