This recent week I have crows hanging around my chicken runs, they steal food and my chickens just chill out with them. Only 1 pullet trying to chase these crows and she is smaller than the crow. I have now hide chicken foods under their coops. The crows are so smart, they hangout on my roof looking down at the chicken runs. My dogs just lay there in the garden and look at the crows in action. They are only chase off the crows whenever they saw me doing it.