First Broody Hatch Attempt.

[Below frigid]

That egg is actually at day 13, but typical of what you can see by day 7-10, sometimes sooner with lighter eggs. Olive and Marans are usually the toughest to see though, so you may have to wait longer, and look for the black dot of the eyeballs instead of seeing as much veins.
Brightest light and candling in good darkness will help.

Thanks getting candler fro TSP tomorrow.

 

[song of joy]

Were the eggs shipped to you or did you pick them up yourself?

 

[Below frigid]

I picked them up.

 

[song of joy]

I picked them up.

That's really good, as shipped eggs can have a low hatch rate.

You have a nice variety of breeds in the egg assortment you received. I hope you get a good hatch! The dark eggs (Marans, EE) will be hard to candle, but you should be able to see signs of development with a good candler. If you're not sure about development when you candle at 7 days, candle again at 10 days.