Any seen the horses that live under the approach to Benson's 19? They don't mind a bit. Mine don't mind either, and we live about 4m SW of Benson.
What they don't like is anything (airborne or not) that comes at them fast and loud without warning. A pheasant flying out of a hedge is just as spooky as a Chinook at 50' AGL popping up over the same hedge.
A conventional approach to land will give them plenty of time to hear it, see it and not be frightened.