However, this morning I found the "shadow". It turned out to be something stuck in the rose bush...
A bird's nest…..
…. with just one blue speckled egg inside….
… obviously abandoned….
There are a lot of blackbirds around and this is one of their nests. I know that they are feral, introduced and not to be encouraged, but they do eat plenty of earwigs and so I can't be too hard on them.
The nest is in a terribly precarious place an dmuch too close to the ground, and I'm not surprised that it was abandoned. I hope the neighbour's cat didn't interfere.