By Anna McKie – The Observer – February 11, 2012

The boom of the bittern is being heard across Britain once again, after more than a century in which the bird has hovered on the edge of extinction. Noted for its foghorn-like call or "boom", the bittern has made a recovery in numbers that the Royal Society for the Protection of Birds (RSPB) described last week as "a phenomenal success". However, experts warn that the bird, one of Britain's rarest, still faces severe threats posed by climate change. "Bitterns are not out of danger yet," said Grahame Madge of the RSPB. "On the other hand, this is a very encouraging trend." For full story, click here.