Saw something unexpected today- has anyone seen crows be aggressive with their ducks? A crow was harassing my two ducks (ancona and muscovy) and they were clearly alarmed by it. I watched and the crow dove at one of them. I came outside and it flew away- my duck ran towards me as if to be relieved that I intervened. I'm assuming a crow can't hurt a duck but the aggressive behavior seemed odd. Anybody else experience this? Anything to be concerned about?