Dont talk , DO. By the common law of the land, what would a prudent person do?
It is your basic right to keep and harbor pets, or raise food within your premisis. Local codes deal with this. (Code issue, should be dealt with in codes Board of advisors)
To lure, threaten and destroy an animal clearly owned and mastered by you is illegal. Especially if it poses no threat.
To adulterate a food source, of any type, is clearly Illegal. Any beast, pet, man, or child that is threatened by this condition, makes for criminal intent to harm, you pick the level.
Once you step into the court room, you must not have any mercy. This is a dangerous individual, with a criminal mind, crush, harrass, and drive him from his house and your proximity. Ducks and chix are cheap, peace of mind is not sometimes. Do not let the darkness limit you. Let his inspired fear crystalize your actions.