Yesterday was day 7 for my eggs (set 12 shipped, 8 of my own, 20 total). Down to 16. Unsurprisingly, the 4 that didn't make it so far are all from the shipped category. 2 of the Welsummers, 1 Light Brahma, and 1 Black Australorp. Blood rings in 2, the other I could tell was a quitter as well.
The final one, a Welsummer, looked more "clear" than the others, so I followed my gut. Well, cracked it open to confirm, and it was completely empty (this was also the one with the completely detached air cell). No embryo or veins. I believe the yolk had been scrambled during shipping, thus no development to begin with.
And here was the contents inside (basically, nothing):
One of the blood rings:
This is a live one, which is from one of my Leghorn hens (did I mention how grateful I am to be able to see so clearly in white eggs? lol).
Unfortunately, many of the shipped ones have saddle shaped air cells, but luckily the scrambled one was the only one with a detached air cell. So, all in all, what I am experiencing with my first shipped eggs is what I have read many shipped eggs may experience. I have never been more grateful for the more "normal" look of my own eggs!