22/08/2003

UK's rare bittern population sees 'dramatic' rise

One of the UK’s rarest birds – the bittern – has experienced its most dramatic annual population increase since 1997, when first started to recover from virtual extinction, according to the Royal Society for the Protection of Birds (RSPB).

Results of RSPB and English Nature research show that numbers of bitterns, an extremely rare heron, have reached at least 42 ‘booming’ males, nearly quadruple the number recorded just six years ago, making this a "triumph for conservation".

Their numbers are measured in ‘booming’ males because these booming calls signify that the birds are ready to breed – and they are so well camouflaged that they would be very difficult to count in any other way.

"These results are extremely encouraging and point to the achievements of recent conservation work," an RSPB spokesperson said.

Bittern numbers had dropped dramatically in the past as large areas of reedbed habitat on which the bitterns depend were "drained, destroyed or neglected" leaving many bitterns without a home.

However, intensive work to create new reedbeds, and better management of their existing homes, has helped reverse the previously dramatic decline in the population, the RSPB say.

Gillian Gilbert, RSPB bittern ecologist, said: "The bittern is still so rare that we know each of these birds individually. But these results are extremely encouraging and point to the achievements of recent conservation work."

A new £4 million project, launched in May this year, will build on this and will see ideal habitat develop for bitterns at 19 sites throughout England.

(gmcg)

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