MikeAqua:A cross bow in an urban area ... I'm not sure how the cops would react if someone complained.
I checked out the legal side before I started and it's OK, also told the neighbours (one of whom said he uses a slingshot to do the same thing), it's not a full-sized crossbow so doesn't have much range, and I'm shooting from an elevated position down onto them so any misses will bury themselves in the ground. In fact because of the limited range I have to get as close as possible to them so there's no chance of stray shots, it's not like I'm shooting from one end of the property to the other.
Edited to add: Oh, and it's not that urban, there's native bush down to the water so no people in that direction anyway.