I thought I would post this because I found it VERY helpful when hatching chicks and turkeys that had not sucked up all the yoke before hatching. I found this information on a website made by a chicken farmer, I wish I would have remembered where it was because she had photos to show you just what to do step by step. I will give you the best details I can. If you have a chick hatch, or you help a chick hatch a bit to early and the yoke is still hanging out of it's bottom, rush over to the sink and wet a warm paper towel wrap the chick in the paper towel and place the chick in a zip lock sandwich bag with only the head hanging out of the bag. What this does is act like the shell of the egg and helps the chick suck up the yoke that way it should have before it hatched. Once I have my chick in the bag I place it back into the incubator until the chick starts moving around on it's own. Many times I will wake up in the morning and the chick will be out of the bag and running around in the incubator all on it's own. I have saved MANY chicks this way! It works wonderful, I hope it helps you as well.