Overview

Distribution

Range Description

This species breeds on Gough Island and Tristan da Cunha (St Helena to UK) in the south Atlantic, and on the Chatham Islands, New Zealand and south of New Zealand's south island. Adults are thought to remain in waters adjacent to colonies; however young birds occur north of the colonies to Australia and South Africa1.

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circum-antarctic
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Range

Breeds islands off New Zealand and Tristan da Cunha group.
  • Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2014. The eBird/Clements checklist of birds of the world: Version 6.9. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
The diet of this species is comprised mostly of cruaceans (especially copepods), squid and some fish. It apparently takes more crustaceans in summer and small squid in winter. Prey is obtained usually by hydroplaning and by filtering or surface-seizing. Breeding starts in July or August and individuals are strongly colonial, nesting in burrows which are sometimes occupied by more than one pair. It breeds on a large variety of substrates and areas; coastal slopes, flat lava fields, offshore islets and cliffs, dry rocky soil, caves and scree (del Hoyo et al. 1992).

Systems
  • Terrestrial
  • Marine
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Depth range based on 260 specimens in 1 taxon.
Water temperature and chemistry ranges based on 250 samples.

Environmental ranges
  Depth range (m): 0 - 0
  Temperature range (°C): -1.176 - 16.532
  Nitrate (umol/L): 2.487 - 28.262
  Salinity (PPS): 33.672 - 35.307
  Oxygen (ml/l): 5.761 - 8.084
  Phosphate (umol/l): 0.336 - 1.997
  Silicate (umol/l): 1.479 - 78.771

Graphical representation

Temperature range (°C): -1.176 - 16.532

Nitrate (umol/L): 2.487 - 28.262

Salinity (PPS): 33.672 - 35.307

Oxygen (ml/l): 5.761 - 8.084

Phosphate (umol/l): 0.336 - 1.997

Silicate (umol/l): 1.479 - 78.771
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Depth range based on 260 specimens in 1 taxon.
Water temperature and chemistry ranges based on 250 samples.

Environmental ranges
  Depth range (m): 0 - 0
  Temperature range (°C): -1.176 - 16.532
  Nitrate (umol/L): 2.487 - 28.262
  Salinity (PPS): 33.672 - 35.307
  Oxygen (ml/l): 5.761 - 8.084
  Phosphate (umol/l): 0.336 - 1.997
  Silicate (umol/l): 1.479 - 78.771

Graphical representation

Temperature range (°C): -1.176 - 16.532

Nitrate (umol/L): 2.487 - 28.262

Salinity (PPS): 33.672 - 35.307

Oxygen (ml/l): 5.761 - 8.084

Phosphate (umol/l): 0.336 - 1.997

Silicate (umol/l): 1.479 - 78.771
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Life History and Behavior

Behavior

Breeding Category

Vagran
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Source: World Register of Marine Species

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Pachyptila vittata

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
BirdLife International

Reviewer/s
Butchart, S. & Symes, A.

Contributor/s

Justification
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

History
  • Least Concern (LC)
  • Least Concern (LC)
  • Least Concern (LC)
  • Lower Risk/least concern (LR/lc)
  • Lower Risk/least concern (LR/lc)
  • Lower Risk/least concern (LR/lc)
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