This is a field Puzzle.
In 2010 Chorus began a cabinet art initiative to try and reduce vandalism to their telecommunications cabinets. It has proved so successful it has been extended throughout NZ and showcases some stunning artwork by local artists. Some of this art can be seen in Kiwimykl's excellent CCA series in Marlborough and on which this series is based.
Go to the posted coordinates and work out where to find the final of this cache.
On the back of this cabinet is more art work.
For the South coordinates; count the number of birds on the back, double that number and add it to the seconds.
For the East coordinates; there is a bird on the right hand end (when standing at the front), count the letters in its name, double that number and subtract it from the seconds.
The final is just a short walk away. Please use extreme stealth if visiting this cache during work hours and please replace so it can't be seen from either side.
There is no room for trackables and you will need to bring your own pen.