IUCN Red List Criteria
| Critically Endangered |
|
| Endangered |
D |
| Vulnerable |
D1+2 |
IUCN Red List history
| Year |
Category |
| 2012 |
Endangered |
| 2008 |
Endangered |
| 2006 |
Endangered |
| 2004 |
Endangered |
| 2000 |
Endangered |
| 1994 |
Endangered |
| 1988 |
Threatened |
Species attributes
| Migratory status |
not a migrant |
Forest dependency |
Does not normally occur in forest |
| Land mass type |
|
Average mass |
- |
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
24 |
medium |
| Area of Occupancy breeding/resident (km2) |
24 |
medium |
| Number of locations |
1 |
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
50-249 |
good |
Estimated |
2008 |
| Population trend |
Increasing |
medium |
|
- |
| Number of subpopulations |
1 |
- |
- |
- |
| Largest subpopulation |
200-249 |
- |
- |
- |
| Generation length (yrs) |
13.7 |
- |
- |
- |
|
Population justification: In 2004, a minimum of 266 birds were counted on most of the coast of four islands in the Chathams group, represented a population of 310-325 birds. By 2006 this had risen to 310-360 individuals. However, the number of mature individuals in breeding pairs remains below 250, and so the population is placed in the band 50-249 mature individuals. |
|
Trend justification: In 1998, a census indicated 140-150 birds, representing a significant increase since 1987-1988. In 2004, a minimum of 266 birds were counted on most of the coast of four islands in the Chathams group, representing a population of 310-340 birds (Moore 2005, 2007). The population appears to have levelled off, having reached over 100 pairs and 310-360 individuals in total in 2006 (Moore 2008). The population, therefore, is estimated to have remained fairly stable over the last 10 years, having increased very rapidly in the 10 preceding years. |
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| New Zealand |
Native |
No |
|
|
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Marine Intertidal |
Rocky Shoreline |
major |
resident |
| Marine Intertidal |
Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc |
suitable |
resident |
| Marine Intertidal |
Shingle and/or Pebble Shoreline and/or Beaches |
suitable |
resident |
| Marine Intertidal |
Tidepools |
major |
resident |
|
Altitude
|
0 - 0 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| Biological resource use |
Hunting & trapping terrestrial animals / Intentional use (species is the target) |
Timing |
Scope |
Severity |
Impact |
| Past, Unlikely to Return |
Minority (<50%) |
Unknown |
Past Impact |
| Stresses |
|---|
| Species mortality |
|
| Human intrusions & disturbance |
Work & other activities |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
No decline |
Low Impact: 5 |
| Stresses |
|---|
| Species disturbance |
|
| Invasive non-native/alien species/diseases |
Problematic native species/diseases |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
No decline |
Low Impact: 5 |
| Stresses |
|---|
| Species mortality |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Black Rat (Rattus rattus) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
No decline |
Low Impact: 5 |
| Stresses |
|---|
| Reduced reproductive success |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Brown Rat (Rattus norvegicus) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
No decline |
Low Impact: 5 |
| Stresses |
|---|
| Reduced reproductive success |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Domestic Cat (Felis catus) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
No decline |
Low Impact: 4 |
| Stresses |
|---|
| Reduced reproductive success, Species mortality |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Domestic Cow (Bos taurus) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
No decline |
Low Impact: 4 |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Domestic Sheep (Ovis aries) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
No decline |
Low Impact: 4 |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Invasive non-native/alien species/diseases |
Invasive non-native/alien species/diseases / Marram Grass (Ammophila arenaria) |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
No decline |
Low Impact: 4 |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Climate change & severe weather |
Habitat shifting & alteration |
Timing |
Scope |
Severity |
Impact |
| Future |
Whole (>90%) |
Unknown |
Unknown |
| Stresses |
|---|
| Indirect ecosystem effects, Ecosystem degradation, Ecosystem conversion |
|
| Climate change & severe weather |
Storms & flooding |
Timing |
Scope |
Severity |
Impact |
| Past, Likely to Return |
Majority (50-90%) |
Negligible declines |
Past Impact |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
Recommended citation
BirdLife International (2013) Species factsheet: Haematopus chathamensis. Downloaded from
http://www.birdlife.org on 22/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 22/05/2013.
This information is based upon, and updates, the information published in BirdLife International (2000)
Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004)
Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.
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