On the first day of no-longer-lockdown-but-tier-3-instead I took a cheeky trip off the naughty step that is Kent into the not-so-naughty step that is Greater London. And there I found a house decorated with symmetrically positioned decoy crows. Presumably to deter pigeons, though I imagine they would deter all sorts of other birds too. A house in favour of neither birds nor of cats then, apparently.
There are 4 decoy crows in front, only another 15 and they'd have corvid-19