Taxonomic source(s)
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.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | - |
Year | Category | Criteria |
---|---|---|
2018 | Least Concern | |
2016 | Least Concern | |
2012 | Least Concern | |
2009 | Least Concern | |
2008 | Least Concern | |
2004 | Least Concern | |
2000 | Lower Risk/Least Concern | |
1994 | Lower Risk/Least Concern | |
1988 | Lower Risk/Least Concern |
Migratory status | not a migrant | Forest dependency | does not normally occur in forest |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 18,400,000 km2 | medium |
Extent of Occurrence (non-breeding) | 30,100,000 km2 | medium |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | unknown | poor | estimated | 1996 |
Population trend | decreasing | - | suspected | - |
Generation length | 8 years | - | - | - |
Population justification: The global population is estimated to number > c.1,300,000 individuals (del Hoyo et al. 1996), while national population estimates include: < c.1,000 wintering individuals in Korea; c.10,000-1 million breeding pairs c.1,000-10,000 wintering individuals in Japan and c.10,000-100,000 breeding pairs in Russia (Brazil 2009).
Trend justification: The population is suspected to be in decline owing to bycatch, predation by invasive species and climate change.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Canada | extant | native | yes | |||
China (mainland) | extant | native | yes | |||
Japan | extant | native | yes | |||
Mexico | extant | native | yes | |||
North Korea | extant | native | yes | |||
Russia | extant | native | yes | |||
Russia (Asian) | extant | native | yes | |||
South Korea | extant | native | yes | |||
USA | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Canada | Anthony Island |
Canada | Duke of Edinburgh Ecological Reserve |
Canada | Englefield Bay Islands |
Canada | Lucy Islands |
Canada | Moore and Byers Islands and Banks |
Canada | Scott Island Group |
Japan | Eastern Hokkaido - Marine |
Japan | Matsumae islets |
Japan | Northern Hokkaido - Marine |
Japan | Sanriku coast and Matsumaekojima - Marine |
Japan | Teuri island |
Japan | Yururi and Moyururi islets |
Russia (Asian) | Kuril islands (between Urup and Paramushir) |
Russia (Asian) | Lesser Kuril Ridge and Kunashir Island |
Russia (Asian) | Tyuleniy Island |
USA | Forrester Island Colonies |
USA | Olympic Continental Shelf |
USA | Outer Islands Marine |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Grassland | Temperate | major | breeding |
Marine Neritic | Macroalgal/Kelp | major | resident |
Marine Neritic | Pelagic | major | resident |
Marine Neritic | Seagrass (Submerged) | major | resident |
Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | resident |
Marine Neritic | Subtidal Rock and Rocky Reefs | major | resident |
Marine Neritic | Subtidal Sandy | major | resident |
Marine Neritic | Subtidal Sandy-Mud | major | resident |
Marine Oceanic | Epipelagic (0-200m) | suitable | resident |
Marine Oceanic | Mesopelagic (200-1000m) | suitable | resident |
Altitude | 0 - 200 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Biological resource use | Fishing & harvesting aquatic resources - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Named species | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Procyon lotor | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Vulpes lagopus | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
Pollution | Industrial & military effluents - Oil spills | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
Purpose | Scale |
---|---|
Food - human | subsistence, national |
Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2025) Species factsheet: Rhinoceros Auklet Cerorhinca monocerata. Downloaded from
https://datazone.birdlife.org/species/factsheet/rhinoceros-auklet-cerorhinca-monocerata on 12/01/2025.
Recommended citation for factsheets for more than one species: BirdLife International (2025) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 12/01/2025.