A conservation refuge off the coast of New Zealand is at risk of destruction after militant hunters boasted of releasing possums there. The threat to Kapiti island, 25 miles north of Wellington, was made last month in three letters to the conservation charity Forest and Bird, by an organisation calling itself the Biodiversity Action Group. The letters' authors claimed to represent local hunters disaffected by the government's pro-conservation policies. "I have let elevin [sic] opossums go on Kapiti," read one. "More to follow."