Huge Mess: Following Purple Penguin's report I went out to check the cache today to find that it has indeed gone. The hidey hole and pile of sticks are still there but no cache. To be honest, I had previously wondered whether there might have been a problem with this location, caused either by humans or other animals, because every time I went to perform cache maintenance I found it uncovered and in plain sight. Therefore I have decided to archive it.
Until I have the inspiration to set a new cache in which to put the puzzle cards, please e-mail me via this website if you want the answer to the puzzle to help you find Weston Head Scratcher.