We too have the big corbies in bunches. Buzzards unheard of in central England 30 years ago are now wheeling over Birmingham. They certainly didn't get there under their own steam.We now have a "Richness" of pine martens, in Norfolk, closely followed by an "Unkindness" of ravens, half a dozen to be exact, these creatures are appearing as if by magic, so what next, a "Predation" of wildlife. If anyone has read the Psychopath Test the author goes to interview a CEO who lived in a large mansion, what he saw there was loads of birds of prey statues everywhere & picture of himself, a lot of them mantling their victims. Kind of reminded me of a certain member of the hawk & owl trust who gets very aroused on TV when he mentions the word Predation, "Oh look, a PREDATION"!!!! as he fumbles around in his trouser pockets. I don't know whats worse, predators or people that get turned on by them.
There are so many releases of raptors, foxes, pine martens etc it's a wonder there are any ground nesting birds left. With the likes of Packham etc glorifying predators( his favourite bird is the sparrowhawk) Joe public think they are wonderful and give no thought to vulnerable species.