We get hundreds of thousands of crows roosting at a large cemetery near our house during the colder months, and they do a great job chasing away hawks. They are crafty opportunists though and I wouldn't leave chicks or eggs out in plain sight because they would most likely make the best of the situation.
They could care less about my bantams or full sized chickens though. Sometimes they pick up leftover treats that my girls don't eat, but they never get close to our girls let alone bully them.
They could care less about my bantams or full sized chickens though. Sometimes they pick up leftover treats that my girls don't eat, but they never get close to our girls let alone bully them.