most unintelligent birds ever ?

779px-south_island_pied_oystercatcher_2cAhh the Oyster catcher, we have a few around work ( we are blessed with plenty of wild life), however when you walk up behind “normal” birds fly off, fly to the side, fly into the trees. Oyster catchers run along directly in front of you. Never veering to the left or to the right just glancing over their wing furtively wondering why you are following them.  Is this twitter or a blog, i dont know..

Picture credit under creative commons license