What is pipping?

[NewHopePoultry]

Ive never hatched chicks or anything, so I am curious,what is pipping?
What does it mean?
How long do they do it before they hatch?

 

[Deanner03]

It's basically when the chick makes a little chip in the shell. You can see a little bump on it. From that point, it can take up to a day (or even a bit more) for it to hatch. Good luck!