Did you give them some eggs after the chook incident? That should mollify them somewhat.
Is their deck at ground level or elevated? The code of practice recommends a 2m barrier between you and the neighbours, the 9 foot hedge will be fine provided their deck is not elevated to nearly that height or above.
I wish it were that simple they have there own chooks but apparently my chooks are a bad influence on them
their house is 2 metres away from the and they are located downhill on a slope so I think they will be fine but my deck it 10 metres away from the hive location on the up hill slope and the way I am planning this the entrance to the hive will be facing my deck and I dont have the luxury of a colorbond fence to prevent them from stinging guests when we are have a party at night.
Maybe I can just cork the entrance in the evening when I am entertaining?