Crows are nasty birds. The first house I lived in was located in a small village (just below 10.000 people). Yet it had 4 churches. Well, 3 churches and an abbey. and a lot of rural estate outside the village's border limits. So crows were not an uncommon phenomenon. All crows I encountered were nasty, mean and really smart. Ravens (or known in Dutch as: kauw). Much less nasty, less mean and just as smart. These could actually be trained with a lot of effort.
Still, you would encounter at times a nasty raven as well. Cycling is popular in the Netherlands and in some areas you could expect them. My brother was attacked once by a crow and once by a raven. I was actually around when a raven landed on his head while cycling and the raven started to poke him hard on the top of his head with its beak. We kept cycling and the raven draw blood before we could scare it away.
Valuables and other shiny stuff are a real target for those birds. And they were really smart at stealing such items from your house. Not to be underestimated, those feathered bastards.