I spent a week looking for the Rooisand horses.
The herd, which roams the flats of the estuary, comprises the descendants of horses that were abandoned after the Anglo-Boer War. It was interesting that they weren't worried by the copter. I'd seen them 3 days in a row and on the final day they actual came towards the camera before moving into the estuary.
Special care was taken not to disturb any bird life in the area.