If you've ever tried to move chickens or sheep from point A to point B, it's possible that you understand why these particular groups of animals are usually referred to as flocks and not herds. If you've learned the herd language first and try to practice that with a flock..it will undoubtedly not end well. If you're not a patient soul while learning the flock language..it will also quite likely not end well. Moving flocks happens on a weekly basis here and for us it's been a learned art, once we learned to speak the language the flock has followed. It's a beautiful thing really and nothing compares to the satisfaction of a successful yet simple flock move.
No herding dogs needed here..we speak flock :)