My inner Grinch is laughing right now.Can you imagine the package of rotting eggs being delivered to the wrong address?
Poor Unfortunate Recipient: "Oh boy! Someone sent me a Christmas present!" and after opening it........ "Ugh! However did I end up on the naughty list?!"

On another note, I think that the mystery egg is from the Lav orp. Her comb was always just like the Blue Laced's comb. Now it is much darker in comparison. I didn't check her vent. She is not exactly fond of being held by me. My wife has much better luck holding the Orps.
Hens go broody when you don’t want them to… and won’t go broody when you do. 

