The last thing the chick does before it hatches, is to absorb the remainder of the yolk it didn't use while growing. The nutrition from this yolk allows the chick to go up to 3 days after hatch without eating or drinking (if offered food sooner they will eat but they don't have to). In nature this allows the hen to continue sitting on unhatched eggs even after the first eggs have hatched, rather than having the abandon the nest to make sure the first to hatch gets sustenance. Once the hatch is complete, the hen will take all of the chicks and show them where to eat. People have taken advantage of this trait by shipping newly hatched chicks all over the country, since they don't need to eat during that initial time after hatch.Wow, theres so much helpful info on here, but i just don't have enough time to read it all... so i have a few questions and if i ask something that was answered on here, i probably just didnt get to it, so bare with me(this is my first hatch, remember, so this is all a learning experiment)... With 5 eggs of my own in the incubator i'm trying to absorb as much info as possible... I remember hearing something about unabsorbed yokes? i don't what that is???If that happens to won of my eggs/chicks how do i know what to look for? Is it serious? what do i do about it? And if a chick has trouble pipping/hatching how do i know when/how to help it out. (my eggs are all set to hatch Oct. 1st/2nd) And just a personal preference question here: if a chick hatches before the others should i leave it in there or take it out? I have a brooder prepared right next to it but if i take it out it will probably let out all the humidity and "shrink wrap" the others, right? I'm going to be candling tonite soon, any suggestions on that? How long can each egg be out of the bator??? Any help is good help to me so feel free to reply!![]()
An unabsorbed yolk occurs when the chick hatches sooner than it should and there is still yolk left to absorb. It hangs off the back of it (connected by the umbilical cord) and should not be cut off because bleeding will occur. If it happens, you won't be able to miss it - the yellow yolk sac is very visible.
There are 3 stages of hatching:
1 - internal pip
2 - external pip
3 - zip and hatch
The internal pip is where the chick pips into the air cell and starts to breathe air. At this point you might hear some faint peeping. The external pip is where it punches a little hole in the external shell, that is visible when you peek through the window of the incubator. The important thing to keep in mind is that it can be 24 hours from that external pip until the final stage of hatching - the zipping. During this 24 hours, not much appears to be happening but it is during that time that the chick is absorbing the yolk. You should avoid being tempted to decide it is not progressing and open the incubator to assist. More than likely you will do more harm than good, as you will cause the membrane to dry out and "shrink wrap" the chick, making it very difficult for it to complete hatching. In my hatch yesterday, I woke to find one pipped, and knew it did it sometime between 2:30 and 5:30 am (okay, so I was up checking on them off an on all night, what of it????? Tee hee) By 10pm, it had not progressed any further, yet, when the chick knew it was time, it zipped and hatched and let me know it had arrived in the world by frantic peeping close to midnight. It seemed like a long day to me, waiting and checking frequently for it to progress but in the end I was glad I didn't intervene as it was able to hatch just fine by itself.
Provided your humidity is high enough and you haven't opened the incubator after the pip, the chick *should* be able to hatch without your help. It is hard work for them though, and they will take frequent breaks to take a little nap and recover their strength to continue. Be patient and let it take its time. In the end, it is better if they can hatch themselves.
On your last question....as long as no other egg is pipped, you can open the incubator and take out any hatched chicks. However I prefer to leave them in until all have hatched. They are safe and warm in there, and their peeping encourages unhatched chicks to get on with the job. As mentioned earlier, they don't need to eat or drink right away so there really isn't any hurry to get them moved. With only 5 eggs in the incubator, I would leave them in until the hatch is complete, assuming they were all set at the same time. That way you don't end up with a lonely chick in a big old brooder by itself.