I work 12 hour shifts, 3 days a week.......and by the time I get home on work nights, it is dark, and currently below freezing. I am wondering if there is anyway for me to tell if the eggs in the nest boxes have been, or are currently, frozen when I get home? Should I just assume they are.......based on the temperature......and throw them out? Do they crack when they've been frozen or what? I don't suppose frozen eggs can be thawed and eaten in the future, can they?