Are these fertile eggs?

[nbuuifx]

Whilst making my dinner today I thought I'd inspect the eggs to look for the sign that they are fertile.

I've attached a picture of the yolks.

The eggs come from a farm with cockerels so it is likely that they are fertile but I've been told the cockerel is lazy and doesn't do his job very well so it wasn't worth incubating the eggs.

They look fertile to me, do you think they'd be worth a shot in the incubator? (obviously not those particular ones, as I've eaten those!)

 

[WVduckchick]

The lower one definitely is fertile. Looks like the other is also.

 

[The Phantom]

The lower one definitely is fertile. Looks like the other is also.

X2

 

[nbuuifx]

I might stick a dozen in and see. Just need to wait a few more days as I only have one electric hen and the 10 day old chicks are using that right now. I wanted to make sure they had the use of that until they are 5 weeks old.