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  1. #1
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    Not so succesfull clutch

    Hi community,
    I'm looking for the reason behind a not-so-successful clutch. I incubated 6 eggs at a temperature of 31.9°C. The first two pythons started pipping on day 65, and on that same day I cut the remaining eggs.
    The problem was that almost all the hatchlings, except one, had poorly absorbed yolk sacs. The remaining yolk was really large.
    I'm trying to figure out where the mistake might have happened. I'm 100% sure about the temperature, as I had both a thermostat probe and an independent thermometer directly in the egg box.
    I incubated the eggs in vermiculite with a 50/50 water ratio.

    I'd appreciate any ideas or suggestions.

  2. #2
    Super Moderator bcr229's Avatar
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    Re: Not so succesfull clutch

    31.9*C is about 89.5*F so your temp would have been fine. Did the neonates come out on their own quickly, or did they stay in the eggs while they absorbed their yolk sacks? Did you find any twisted umbilical cords that would have prevented them from absorbing yolks?

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    Bogertophis (07-22-2025),Homebody (07-21-2025)

  4. #3
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    Re: Not so succesfull clutch

    Thank you, bcr229, for your response. The hatchlings stayed in the eggs for another 3–4 days. There was no tangled umbilical cord. Two of the hatchlings were already dead when the eggs were cut open — as if they were too weak and couldn't manage to cut through. The inside of the egg was scratched, but there wasn't a single clean cut. Two of them, despite having unabsorbed yolk sacs, have rather large bellies — it doesn’t look like hard belly for now — and two are quite skinny. I'm still trying to figure out where something might have gone wrong.

  5. #4
    BPnet Senior Member Lord Sorril's Avatar
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    Re: Not so succesfull clutch

    It sucks to have a problem clutch because you only get one chance/year/female.

    What were you using for a heating element and thermostat? How were you diffusing the heat evenly in the incubator? Where was the probe in the egg bin?

    If I was to guess on the issue based on your original description alone: I would suspect that the heat distribution was uneven and you have different eggs at different stages of development. Since 31.9C is on the top temperature for egg tolerance...an on/off thermostat would be bad...with a proportional thermostat relying on perfect thermal distribution. In the event of a poor heat distribution: Some eggs would die from overheating (development interrupted), and some would be underdeveloped at the same point in time where others are hatching.

    +Fun fact: Ball pythons have a short umbilical stalk (not a cord). This is a sturdy anchored structure. Upon necropsy: I have yet to observe a single case where I thought a compressed umbilical stalk was the cause of hatchling death. I suppose anything is possible though...
    *.* TNTC

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  7. #5
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    Re: Not so succesfull clutch

    Lord Sorril, thank you for your response. I’m using a DIY incubator made from a wine fridge, with a heating foil and a Danitech thermostat – which I dare say is the most reliable thermostat in our region (Central Europe). Heat is distributed throughout the incubator using a fan. The probe inside was in direct contact with one of the eggs. Unfortunately, I don’t remember whether the hatchling from that specific egg turned out fine or not. I didn’t notice any issues with the previous 4 clutches. However, I’ll definitely focus on checking heat distribution and verify it through measurements – it does make sense.

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  9. #6
    Registered User NJ Balls's Avatar
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    Re: Not so succesfull clutch

    Did you burp your egg bins to let in fresh oxygen? I had a similar problem one year when I went on vacation.

  10. #7
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    Re: Not so succesfull clutch

    Quote Originally Posted by Janci View Post
    Hi community,
    I'm looking for the reason behind a not-so-successful clutch. I incubated 6 eggs at a temperature of 31.9°C. The first two pythons started pipping on day 65, and on that same day I cut the remaining eggs.
    The problem was that almost all the hatchlings, except one, had poorly absorbed yolk sacs. The remaining yolk was really large.
    I'm trying to figure out where the mistake might have happened. I'm 100% sure about the temperature, as I had both a thermostat probe and an independent thermometer directly in the egg box.
    I incubated the eggs in vermiculite with a 50/50 water ratio.

    I'd appreciate any ideas or suggestions.
    So sorry to hear your news !

    Maybe try the natural way sometime in the future ?

    Its a long story but a while ago we came back off holiday to find my Albino Royal python ( Ball python) under the warm hide huddled over 5 huge eggs !!

    I panicked initially as I had never been in this situation and clearly had no incubator etc

    Anyways I searched online and just followed the basic instructions

    The hide temp should be around 90F and have a certain amount of moisture.

    Anyways luckily she had laid the eggs under the warm hide which was about 91F so I bought a bag of sphagnum moss from the local pet store … then placed moss under the hide all the way around half was in/ under the hide and half outside- then I heavily sprayed the surrounding moss each day


    I left everything alone and then eventually woke to see 5 perfect albino baby Royals !

    I felt so attached to them that I still have them all to this day …







    Sent from my iPhone using Tapatalk

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    bcr229 (08-26-2025),Bogertophis (08-26-2025),Homebody (08-27-2025)

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