I've been getting eggs from my chickens for over 6 months now and I recently realized that I still had a carton (or two, shh) of their eggs way back from the beginning. I opened up the carton and started laughing because they used to be so tiny! Here's a side-by-side shot of last week's eggs on the left (notice that the Aracuana is not laying) next to the first round of eggs on the right.
I decided it was probably time to get rid of the 6-month-old eggs, so I cracked them down the garbage disposal and put the shells in the compost pile. Amazingly, even though they seemed a little shrunken inside, not a single one smelled off...even after 6 months.
These'll make a nice addition to the compost heap.