Bless them, they're like little velociraptors!
I don't often see my resident pair - just when they come for a bit of breakfast. They're banished by Quentin the carrion crow who torments him whenever he sees them but they manage to function in their territory.
I have ravens, rooks, jackdaws and jays here too and a very healthy song bird population including yellowhammers and reed buntings so they don't have any negative impact that I've noticed. A nice balanced ecosystem without much interference from anyone's free-roaming furry pets.
Happymarion, my country robins are very shy but I do have swans and geese for company! Luckily they don't know how to get in to help me with the gardening..