lenfield
Senior Member
Magpies have memories and can recognize individual animals. My neighbour's cat killed a magpie a few weeks ago and several of them mobbed it. One magpie is still doing it. Presumably the dead one was his/her mate.
I wan't imagining it. Magpies are members of the crow family and they can hold grudges for generations.
https://www.countryfile.com/news/do-crows-hold-grudges