Thalassarche bulleri is endemic to
New Zealand. There are colonies on the Snares (8,713 pairs) and Solander (4,912) Islands in the south (Sagar
et al. 1999b, Sagar and Stahl 2005)
, Forty-Fours (c.14,500) and Big and Little Sister (2,150) Islands in the Chatham Island group (ACAP 2009)
, and Rosemary Rock, Three Kings Islands (20 pairs) off North Island (Croxall and Gales 1998)
. This totals approximately 30,500 breeding pairs. The Snares Islands population has almost doubled since 1969, but the rate of increase has slowed in the 1990s (Sagar
et al. 1999b, Sagar and Stahl 2005)
. The Solander Islands population appears to have remained relatively stable during 1985-1996, and has increased by around 18% during 1996-2002 (Sagar and Stahl 2005)
. The Chatham Island population is thought to be stable (ACAP 2009)
. Juveniles and non-breeding adults can disperse across the south Pacific Ocean to the west coast of South America (Stahl and Sagar 2000b, Taylor 2000, Spear
et al. 2003)
.
Rights Holder: International Union for Conservation of Nature and Natural Resources
Bibliographic Citation: BirdLife International 2012.
Thalassarche bulleri. In: IUCN 2014 . IUCN Red List of Threatened Species. Version 2014.1 . <
www.iucnredlist.org>
