Invisible rail, extinct rail and other railings

A friend has been trying to photograph water rail at the Great Fen. Not an easy task. Even the RSPB notes that they are difficult to see in breeding plumage. They do also mention that they are highly secretive. Shockingly, as a non-twitcher (and even non-birdwatcher really) I have seen one. And even photographed it - though finding the image is proving as difficult as the species itself. I say shockingly as I really can't emphasise enough how it is luck rather than skill in seeing rails. The family Rallidae includes species called the "Inaccessible Island rail" and the "invisible rail". When they aren't being inaccessible or invisible, they are being made extinct. For instance, the Red Rail