Week 7! I have been able to see definite movement in all the eggs now, except for 2 or 3 that are at the very bottom of the pile. Really neat stuff. I wish I had some way to film it, but my camera doesn't have a video function and my phone takes terrible videos.
I took a couple of pictures of the same egg in the same spot, and if you look closely at the left side of the egg, you can see the dark red spot change shape.