I've tried searching but I'm getting lots of chickie pics instead of pics of pips. Try saying that 3 times fast! LOL. Do any of you have any you'd like to share?
They just look like a little hole in the shell. I don't have any pictures, sorry. Good luck finding a picture!
Picture of a very dirty duck egg pipping, plus progress after several hours (all three of my eggs that hatched took about two days from pipping to popping). Sorry for the click-through, but it's easier than trying to post the pic here: http://heatherhead.wordpress.com/2009/07/27/more-eggs-pipping/