Failure in incubation can be a good thing. If the chick fails to develop properly, then mother nature keeps the issue from coming to fruition. As long as you have observed good incubation protocol, other than disappointment, there is nothing to feel bad about. Recently, I purchased 12 CLB hatching eggs from Texas. The PO succeeded in scrambling them beyond belief. 10/12 broken air sacks. 6/12 failed to develop, 4/12 developed blood rings, 1/12 was a late quitter, and 1/12 actually hatched. resulting in a pretty little pullet, who will be henceforth known as "Tex". And yes, I was very disappointed but there was nothing that I could have done to have improved the outcome. The eggs were rested for four days during incubation before the turner was activated.
I candle my incubating eggs on the 7, 14, 18 day intervals regularly. I may also candle extra times if I want to make sure things are progressing, especially if there is an egg that is overdue to hatch. The candling can confirm everything is OK or identify a chick that may need some help, or identify a late quitter.
Candling does not harm the chick. If you use a high intensity LED flashlight for candling, then you do not have to worry about heat being applied to the egg as you would from an incandescent bulb. I find that the really high intensity LEDs flashlights let me see into darker eggs than would have been possible otherwise.
I candle my incubating eggs on the 7, 14, 18 day intervals regularly. I may also candle extra times if I want to make sure things are progressing, especially if there is an egg that is overdue to hatch. The candling can confirm everything is OK or identify a chick that may need some help, or identify a late quitter.
Candling does not harm the chick. If you use a high intensity LED flashlight for candling, then you do not have to worry about heat being applied to the egg as you would from an incandescent bulb. I find that the really high intensity LEDs flashlights let me see into darker eggs than would have been possible otherwise.
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