Using its egg tooth (a tiny, sharp, horny projection on the end of its beak), the chick pecks at the shell thousands of times. Finally, the young bird pips its way through the shell and begins to breathe air directly from the outside. After the chick has made a hole in the shell, it stops pipping for three to eight hours and rests. During this time, it is acclimating its lungs to the outside atmosphere. After the resting stage is completed, the second stage of pipping begins.
The chick begins to turn slowly inside the egg. As it turns, usually counter-clockwise, the cutting edge of the chick tooth continues to chip away. In two to five hours, the chick has made about three quarters of a turn inside the egg. As the chick progresses in its movement around the shell, it begins pushing on the egg cap (large end). Squirming and struggling, the chick works feverishly for about 40 minutes pushing at the cap. Finally with a vigorous shove, the chick breaks free from the shell, still wet and panting.
When the chick is freed completely from the shell, it lies still. Its energy has been virtually exhausted, and it is extremely tired. After a rest of some few minutes, the chick begins to rise to its feet and gain coordination of its muscles. Within a few days the egg tooth, its usefulness over, will disappear.
What did you read most important right now???
it stops pipping for three to eight hours and rests. During this time, it is acclimating its lungs to the outside atmosphere.
Now read this....
make hatching assistance far more complicated than it needs to be. Think of it this way - What's the rush to get a chick out the shell??? All it means is you have another mouth to feed. Relax!
The developing embryo has lived in this shell for well over 3 weeks. It has survived off of the contents of the egg for that entire time. The only thing it has absorbed from the outside is Oxygen. As long as the chick is getting Oxygen, there is nothing urgent. Too many people feel the nseeed to rush in and pull a chick out of a place that has served it well for 3-4 weeks.
At hatching, the chick only needs to make the transition from using the blood vessels in the shell membrane to gather Oxygen, to using its lungs instead. Once the lungs are developed, the yolk is absorbed and the blood vessels will recede. Let that happen. There is plenty of yolk to take care of the chick’s nutritional needs for 24-48 hours after a normal hatch. There should be no rush to get a chick out of the shell if it can breathe. As long as it has access to air through the pip, it can sit there all day, even after the blood vessels recede. It's not going to starve. It has plenty of yolk. It's not going to dehydrate, unless you get impatient and begin removing shell before it's time to do so causing bleeding or too much exposure to outside air. info from http://www.avianresources.com/Nursery_Mgt.htm
SIT ON HANDS CHAD!!