Day 7 development question

[Theclassicalfarmer]

I’m not sure if this is an incubation question or a fertility question.

We started our first incubation with 3 breeds of chickens. Ameraucanas, Minorcas, and a RIR/Barred Rock mix.

It’s day 7 and I candled to see if there was any development. 10 out of 11 Ameraucanas show veins, 11 out of 11 RIR/Barred Rock show veins, and 1 out of 19 Minorca shows veins.

Is this lack of development normal or do we potentially have a fertility issue?

 

[Pyxis]

With most of the eggs developing of the other breeds, and only the minorcas showing issues, I would suspect it's a fertility issue. Are these eggs from your own flock, or shipped in? If shipped in, they may have just been damaged in shipping. If your own eggs, I would crack some of the next ones you get to determine fertility.