EN
Hutton's Shearwater Puffinus huttoni



Taxonomy

Taxonomic source(s)
Brooke, M. de L. 2004. Albatrosses and Petrels Across the World. Oxford University Press, Oxford.
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
Turbott, E.G. 1990. Checklist of the Birds of New Zealand. Ornithological Society of New Zealand, Wellington.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- B2ab(iii) A2e; B2ab(iii); D2

Red List history
Year Category Criteria
2019 Endangered B2ab(iii)
2018 Endangered B2ab(iii)
2016 Endangered B2ab(iii)
2012 Endangered B2ab(ii,iii)
2010 Endangered B2a+b(ii,iii)
2008 Endangered B2a+b(ii,iii)
2007 Endangered
2006 Endangered
2004 Endangered
2000 Endangered
1996 Endangered
1994 Endangered
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency does not normally occur in forest
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 16,700,000 km2 medium
Extent of Occurrence (non-breeding) 12,300,000 km2 medium
Area of Occupancy (breeding/resident) 5 km2 medium
Number of locations 2 -
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown medium estimated 2004
Population trend stable medium suspected -
Rate of change over the past 10 years/3 generations (longer of the two periods) 30-49% - - -
Generation length 19.5 years - - -
Number of subpopulations 1 - - -
Percentage of mature individuals in largest subpopulation 100% - - -

Population justification: Cuthbert and Davis (2002) estimated 106,000 breeding pairs. Brooke (2004) estimated a total population of 300,000-350,000 individuals.

Trend justification: For many years, this species has been considered to be in a long-term decline (Sherley 1992, Heather & Robertson 1997), but a major study has indicated that the population was stable from at least 1990 to 2000 (Taylor 2000). Recent evidence even points to an increase in the population for the Kowhai Valley at an annual rate of 1.7% over the last 20 years, based on burrow density (Sommer et al. 2009). This was confirmed in a study of marked and unmarked individuals, which found a population increase of 2% per year between 2002 and 2014 (Rowe et al. 2018). Given the long generation length of the species, it is precautionarily retained as stable.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Australia extant native yes
New Zealand extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
New Zealand Canterbury (offshore)
New Zealand Cook Strait
New Zealand East Coast South Island (offshore)
New Zealand Ka Whata Tu o Rakihouia/Kaikoura
New Zealand Kaikoura (offshore)
New Zealand Southern South Island (offshore)

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Temperate major breeding
Marine Neritic Pelagic major breeding
Marine Neritic Pelagic major non-breeding
Marine Oceanic Epipelagic (0-200m) major resident
Shrubland Temperate major breeding
Altitude 1200 - 1800 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Fishing & harvesting aquatic resources - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Whole (>90%) Negligible declines Medium Impact: 6
Stresses
Species mortality
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Felis catus Timing Scope Severity Impact
Future Whole (>90%) Slow, Significant Declines Low Impact: 5
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Mustela erminea Timing Scope Severity Impact
Ongoing Whole (>90%) Negligible declines Medium Impact: 6
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Sus domesticus Timing Scope Severity Impact
Ongoing Whole (>90%) Negligible declines Medium Impact: 6
Stresses
Ecosystem degradation, Species mortality
Pollution Excess energy - Light pollution Timing Scope Severity Impact
Ongoing Minority (<50%) No decline Low Impact: 4
Stresses
Species mortality

Recommended citation
BirdLife International (2024) Species factsheet: Hutton's Shearwater Puffinus huttoni. Downloaded from https://datazone.birdlife.org/species/factsheet/huttons-shearwater-puffinus-huttoni on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/12/2024.