Hen's eggs that is. My plot has been covered over since late autumn but now I've come to do the winter digging I keep digging up hen's eggs. Four or five in the last few weeks. Some have had the red lion stamp on too, so they are shop bought. There is no sign of digging, the ground is flat and walked on, all smooth where the groundsheets have been.
My thought is foxes, but I can't see how they buried them without me noticing. They are all whole as well, none broken so far.
Any ideas?