Document ID: chunk:federal_register_of_legislation:F2022L00775:reg:18:p66
Version: federal_register_of_legislation:F2022L00775
Segment Type: reg
Provision Reference: reg 18 (pt 66/152)
Character Range: 222519–225609

oceanic islands. It nests in burrows with an end chamber. Its diet comprises mainly of planktonic crustaceans, which are caught under water in pursuit-diving either from the surface or after plunging.

   Population Estimates and Trends
Brooke (2004) estimated the global population to exceed 16 million individuals. Two subspecies breed in Australia, P. u. exsul is restricted to Heard and Macquarie Islands and has an estimated population of 1,000–10,000 individuals on Heard Island (Woehler et al. 1991) and 20 pairs on Macquarie Island in 1979 (Brothers 1984). Subspecies P. u. urinatrix breeds on islands of south-east Australia, Tasmania, New Zealand. Common Diving-petrel occurs on 53 offshore islands in Tasmania with an estimated 127,000–184,000 pairs (Brothers et al. 1996; Brothers et al. 2001). No populations estimates are available for Victoria, and the Australian trend is unknown.

   Conservation Concerns and Actions
Rats are present in multiple colonies where this species breeds and could be suppressing breeding success. Eradicating invasive species on offshore islands should be a priority as well as maintaining strict quarantine controls on all known breeding islands.

   Recommended Management Actions
          Regularly monitor breeding populations at index locations

          Determine non-breeding areas and migration routes

          Measure contaminant levels in all relevant life stages

          Work with range states to control, or eradicate invasive species on breeding islands

      Implement best practice quarantine measures at breeding colonies to reduce the risk of any invasive species (re)establishing on islands

98 Wildlife Conservation Plan for Seabirds
Species profiles

South Georgian Diving-petrel (Pelecanoides georgicus)
Life History and Distribution
The South Georgian Diving-petrel (Pelecanoides georgicus) is a small stocky petrel similar in appearance to the Common Diving-petrel (P. urinatrix). The South Georgia Diving-Petrel has a circumpolar distribution, breeding on South Georgia (Georgias del Sur) in the south Atlantic and on the Prince Edward Islands (South Africa), Crozet and Kerguelen Islands (French Overseas Territories) and Macquarie and Heard Islands in the Southern Ocean. In New Zealand, it breeds on Codfish Island (del Hoyo et al. 1992). It breeds between October and February in colonies on oceanic islands amongst scree or volcanic ash above the tree line, or under sand dunes in areas of relatively flat ground. It nests in burrows with an end chamber. Little is known about its movements but it is presumably sedentary (del Hoyo et al. 1992). It feeds mainly on planktonic crustaceans, particularly krill, but will also feed on some small fish and young cephalopods. Prey are caught under water in a pursuit-dive or by surface-seizing.
Population Estimates and Trends
Brooke (2004) estimated the global population to number around 15 million individuals. The population on Heard Island was estimated at 10,000–100,000 individuals in 2003/04 (Woehler 2010), with 3–4 pairs found breeding on