Britain's loudest bird looks like it's back from the brink of extinction - and making the East its home.
The RSPB's latest survey has revealed a record high of 83 male bitterns in East Anglia, with 34 of them found in the Cambridgeshire Fens and 23 in Norfolk.
Since 2006, there has been a year-on-year increase in the number of bitterns making their home in East Anglia.
With their well camouflaged, pale, brown plumage, bitterns are highly secretive birds that spend most of their time hiding in dense stands of reed.
They had completely disappeared in Britain by the 1870s, before recolonising early in the 20th Century.
However, they found themselves back on the brink in 1997 when numbers dropped to 11 males.
The RSPB say bitterns, along with a number of other species, have long benefited from EU laws that protect their habitat.
More than half of Britain’s breeding bittern population occur within Special Protected Areas (SPAs), however, the rest of the vulnerable population make their home on sites without legal protection.