A 90 year-old retired chief inspector has been left stumped after finding eggs buried in his back garden.
Bill Hart from Dundee first discovered the hens’ eggs buried behind his home in Dalrymple Place at Easter time.
Since then the eggs have appeared with increasing regularity - with Mr Hart estimating he has found half a dozen so far.
Following his lead, other residents of the street have also found eggs buried in their backyards - assuming that they were left by birds.
But Bill’s recent discovery of a factory stamp on a shell has reopened the mysterious case of who or what is burying the eggs.
On Thursday Bill found yet another egg buried beside a clothes pole in his back garden.
He said: “When I went out in the morning to the back garden, I saw a hole had been dug by one of the clothes poles.
“There’s been about half a dozen maybe more over the last few months but I don’t know where they’re coming from.”
“My friend who lives a few streets away has found them, too.”
He has now developed his own theory that the culprit is an urban fox after finding some of their shells broken with the contents missing.
Foxes are known to bury food in the ground to keep it cool - returning to eat it at a later date when other food is sparse.
He explained: “It might be foxes but that’s just a guess.”
But the mystery of where the eggs are from remains open - as there are no hens kept nearby and the local shop on Glamis Road does not leave eggs outside.
“Somebody must be putting out eggs,” said Mr Hart.
“But the shop says it doesn’t get eggs delivered so it has none round the back at all.”