Ok, I did the water test with some of my eggs that aren't developing. Out of two eggs that were on day 10, one floated and one sank. I also used an egg that was on day 6. It sank. I then opened up the two that sank to fry them up for the chickens. Both eggs yolks were totally flat and without shape. Does this mean that they are bad?
Up until the 1960's infertile/clear eggs from hatcheries were sold to bakeries by the millions to be used in bread and pastries. I would not eat them but they should be fine hard boiled for chicks, chickens and other animals.
Agree with redcatcher... I wouldn't eat them but I'd for sure scramble them back to the chickens. Good source of protein and a lot of animals have a LOT stronger guts than humans do. People can say 'bacteria' all they want, but I've seen chickens eating plenty of things I'd never feed to a human and be fine.