They are gone. For the first time in weeks, the neighbourhood is not ringing to the cries of annoyed or distressed plovers. For the first time in weeks, the evenings are silent.
The plovers are gone. Why? I have no idea. I suspect Mr N.D. did something to the nest, or the grey cat I scared off the other night came back and killed one of them. Either way, they are gone.
[Edit: July 1] Well, Plovers are back in the street, but the nest is permanently destroyed. Alas, and plovers being what they are, they are now nesting on a driveway two doors down. Go figure.