Taken 6-Apr-12
Visitors 30


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Keywords:southeast, rangitira, island, chatham, islands, reserve, conservation, wilderness, sanctuary, petrel, operation, programme
Photo Info

Dimensions7087 x 4724
Original file size9.36 MB
Image typeJPEG
Color spaceAdobe RGB (1998)
Date modified6-Apr-12 14:55
Shooting Conditions

Camera makeNikon
Camera modelNikon COOLSCAN V ED
Chatham Petrel operation 7

Chatham Petrel operation 7

The neoprene entrance protecting the new artificial nest burrow and chamber for the endangered resident Chatham Petrel. With the many thousands of petrels competing for nesting burrows, this entrance is hidden making it less likely to be envaded by the broad-billed prions who will take the burrow and kill any inhabitants. Following a feeding trip out to sea, the resident chatham petrels have an amazingly accurate navigational system that where they can precisely relocate their burrow entrance amongst the other 10,000s of burrows, and feed their chick.

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.