Bare in mind this was during the great depression, but I was told several years ago by an older lady that they would take the eggs that showed clear at first candling and eat them. Not sure if they were using them in recipes, hardboiled, fried, or whatever. Times were tough and they were hungery. She and her husband were doing well many years after the fact, so I'm betting your birds could handle it fine.
Ah ha. Thanks, Gary. They'll be getting a nice breakfast in the morning.