Day 6 and candling of eggs

[equine chick]

Okay I candled the 15 eggs we got in our first hatch. There are 11-12 definites. The cochins are iffy but could be because they are brown and harder to see than the americaunas. The americaunas all but one(about 9) are showing really great vein structure and air cell definition. When do I candle again? Day 10? Then what should I be looking for?

 

[silkiechicken]

I did day 12. Here is what I saw on day 12.

The first is a white egg, the second a RIR brown. So not as dark as a maran or anything.