Dick Warner's final column: Private eye on a nest

I found an egg in my yard the other day or, to be more accurate, an eggshell. It was pure white and about half the size of a small hen’s egg. It had been opened at the broad end and the contents removed.
It was the egg of a wood pigeon and, because I have a taste for natural history detective stories, I started to speculate on its story. There are several wood pigeons nesting around the place at present, more than in previous years.