100% hatch rate

I don't know which was more astonishing, the 100% hatch rate (if you don't count the yolkers) or the fact that this little guy popped out of his shell in perfect shape...40 hours after his last compatriot was already in the brooder.  In fact, I had meant to autopsy the sole remaining egg and clean the brooder before the last chick hatched, but I got busy enjoying the first beautiful weekend of the year and forgot about it.  Which turns out to be a good thing since this chick was apparently just a late bloomer and was quite willing to take on the world.

I headed to Permaculture Chicken: Incubation Handbook's "Causes of incubation-related problems" to see why my percent viability was so low when my hatch rate was so high.  (Yes, I do refer back to my own books --- that's why I write them.)  With the added data-point that the yolkers were all from our oldest hens, especially the cuckoo marans, I concluded that the fault probably lies in our rooster preferring younger women.  Sounds like I should probably choose eggs from our younger hens for our second hatch of the year.