Eggtopsy - Do these eggs look like they were fertile

[Georgeie]

Can you tell if an egg was fertile or not?

I purchased these eggs. The seller said that 10 would probably hatch and said they often hatch 12 of 12. I think I see a couple of these started developing but want another opinion. I'll post several picture because the lighting changed and it looks like I moved the eggs around.

Out of the 17 eggs, 5 hatched. 29% hatch rate.

I bought these eggs local so there should have been no shipping damage.

 

[Georgeie]

Well, I've been reading and believe I found a place that goes over this pretty well.

Eggtopsy and Fertility - it says:

It’s a common misperception that if an egg does not develop, it wasn’t fertile to begin with. While that’s definitely a possibility, there are other reasons that an egg might appear completely undeveloped after incubation. A fertile egg can sustain damage in shipping that prevents it from developing, or an egg might be stored improperly or for too long. It’s also possible for a fertile egg to start and stop development so quickly that there are no signs at breakout.

And it also says:

After 21 days of incubation, the blastodisc or blastoderm is so degraded that it’s impossible to tell for certain if an undeveloped egg was fertile or not.

 

[Debbie292d]

Most of us candle at 5-7 days and toss the infertile ones. I call them lava lamps as they light up with nothing but a yolk inside, whereas those developing have a little blob with veins coming from it.

I see some globs in that pile of egg matter, so apparently, at least a couple of them started and then stopped.