I recently incubated 8 eggs from several different hens and ended up with only 4 chicks. Three of the duds were fresh, one per day from the same hen and I still want to try to get some chicks from that hen in the near future. She never took as well to my rooster as the other hens so her eggs not developing was no huge surprise; unfortunately I think I collected the 3 from her after she had some sort of weird falling out with him, since I started seeing very obviously infertile eggs right after the ones I collected to put under a broody. My rooster is a gentle guy who won't try anything with an unreceptive hen, so I've just had to wait until they seemed to be back on good terms and then start checking fresh eggs again. I am having trouble "reading" her yolks though. I've seen other eggs show perfect bullseyes, so I do know what that looks like, but I've also seen variation in how well-formed the bullseye looks. From the hen in question, after a run of solid white dots (obviously infertile) I'm now seeing things more like the pic below, which are like a semi-circle with an off-center brighter white dot. If the pic is clear enough to tell anything, how should I be interpreting this pattern?
