unhatched chickens eat/obsorb the yoke as food until they hatch out,all the nutrient minerals needed are in the yoke sack and it is absorbed through the stomache about where a chooks bellybutton would be.
They eat, or absorb, the yolk of the egg.
From the eggs we eat, there are chicks inside the egg. (the yellow part) Believe it or not, sometimes there are two chicks in one egg! One time my brother opened a hard boiled egg that had two small yellow circles.
They actually eat the yolk of the egg to grow and to hatch. After hatching they do not need food for a few days.
If you have medicated chick feed, that would be the best, of course, but if you don't have anything else you can feed them hard-boiled egg. Chicks love it (mostly as a treat) and will eat it right up. Mash it up really good because if they can tell it's an egg, then when they grow up and start laying then they'll break their own eggs and eat them.
Does It Matter? but there are little holes in the egg
you hatch eggs to grow the chicks into chickens for their meat and eggs to eat
All the food the baby bird needs is in the egg, especially in the yolk. The egg starts with a very small germinating chick and a large yolk. Inside the egg, the chick absorbs the proteins, fats and other nutrients from the yolk for growth and development. Meanwhile the yolk shrinks. At hatching a baby chicken has a small portion of the yolk inside their body as a reserve. That reserve gives the baby chicken time to learn what to eat outside the egg. See http://urbanext.illinois.edu/eggs/res16-egg.html
embryo
sperm to sperms cells
You eat Chinese egg rolls during the Chinese New year.
no
Yes. fish is a good source of protein for chicks. Be careful feeding fish exclusively to laying birds as the flavor can transfer over to the egg and produce an undesirable taste in your morning breakfast.