In Australia, we have magpies, AKA Black & White murder birds. Sensible people pay them protection so that, during the mating season, they don't get swooped by hostile males protecting their nests from potential predators.
Once had a group of five female magpies "trained" to protect me from possibly murderous rivals from outside their territory.
@ct_bergstrom
Oh yes - we do have ravens as well. But the black & white murder birds are much more common.