What does the pip mark look like on a cockatiel egg and how does the piping sound, sound like?

Question

My cockatiels layed 4 eggs, It's been 18 days since the first egg and the second egg started gettin incubated. I see a line on the egg of the first. How is the pip mark suppose to look like? and how the piping sound coming from inside the egg sound like??

Answer 1

Cockatiel eggs usually hatch about 18-21 days, so they are getting close. Here are a few pictures of an egg hatching. Just go down until you see them. They are close to the bottom.
http://members.optusnet.com.au/~geoffwatts1/Cockatiel_Egg_Hatching.html
I'm not sure what the hatching sounds like. Probably cracking like when you crack an egg to eat it.

Answer 2

O, well i have some cockotiels too.
there should not be a pip mark for a long time.
it will take about 1 t 2 months for that to happen.

Answer 3

it will look like a bunch of little cracks in a row making a circle around the fat end of the circle. kind of tap the end and make a chirping noise. you will hear the chick go tip chip tip chip working furiously to get out.