Thank you. My first thought when reading this was that sheep dogs, the really good ones, don't typically bark. They are very patient and quiet. Barking is like

Thank you. My first thought when reading this was that sheep dogs, the really good ones, don't typically bark. They are very patient and quiet. Barking is likely to send the sheep in the wrong direction. I owned a working cattle dog once (when I worked on a farm with cattle) and this dog did bark, too much! She wasn't a very good working dog because she'd spook the cattle with the barking. Ultimately, I'm not convinced a "barking" drone is really going to be very effective.