BBC London, reporting on some building developments which are being held up by protests from English Nature, announced that the three key bird species were ‘Dartmouth Warbler’ (actually Dartford Warbler), Woodlark and Nightjar. But the really amusing bit was that the Nightjar was illustrated with film of some Wigeons. It’s always slightly unnerving when journalists report on a subject which you know something about; it makes you realise how much crap they must be talking the rest of the time.