Removing the inhabitant Chatham petrel chick from a natural nest under the tree trunk. This is carried out by reaching into the burrow, and feeling blindly, waiting for the petrel to snap at your fingers - as they snap (often drawing blood) then grab the beak with thumb and forefinger and carefully extract back through the entrance hole.
Conservation efforts for the Chatham petrel started in the late 1980s, the initial focus of which was locating burrows and determining the cause of breeding failure. Once it was determined that burrow competition from broad-billed prions was causing most breeding attemptes to fail, attention shifted to protection of burrows and chicks from prion interference. Natural burrows were replaced with plastic or wooden artificial burrow (to guard against collapse) and protected from prion entry by the fitting of a neoprene flap over the burrow entrance. Burrows are also blocked over the non-breeding period to ensure they are not occupied by prions during the petrels winter absence. In the 2005/06 breeding season of the 155 known breeding pairs on Rangatira, 83% were successful in fledging their chick. New populations are being established, through chick tranlocations, onto nearby Pitt Island and the South coast of the main Chatham Island.