Never mind how many, tried herding ducks?

Jack Yan worked out how many ducks the farmer had but could he herd them? I didn't think this would be possible but in Viet Nam, with a person on each riverbank & one in the boat, they made it look easy. There's a short video below and higher resolution photos.

I think it's probably quicker to take them by scooter, I estimated they had about 30 on this one!