Data Zone
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 | full migrant | Forest dependency | Does not normally occur in forest |
| Land mass type | Average mass | 530 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 15,400,000 | |
| Extent of Occurrence non-breeding (km2) | 16,400,000 | |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | poor | estimated | 2009 | |
| Population trend | Stable | estimated | - | |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | - | - | - | |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | - | - | - | |
| Percentage in largest subpopulation | - | - | - | |
| Generation length (yrs) | 8 | - | - | - |
Population justification: The global population was estimated to number 235,000 individuals in 1993 (del Hoyo et al. 1996).
Trend justification: The overall trend is likely to be stable. In North America, this species has undergone a small or statistically insignificant increase over the last 40 years (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007). Note, however, that these surveys cover less than 50% of the species's range in North America.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Canada | N | Extant | Yes | Yes | ||
| Japan | N | Extant | Yes | |||
| Mexico | N | Extant | Yes | |||
| Russia | N | Extant | Yes | Yes | Yes | |
| Russia (Asian) | N | Extant | Yes | Yes | Yes | |
| USA | N | Extant | Yes | Yes | Yes |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | major | breeding |
| Marine Intertidal | Rocky Shoreline | major | non-breeding |
| Marine Intertidal | Rocky Shoreline | major | breeding |
| Marine Intertidal | Tidepools | major | non-breeding |
| Marine Intertidal | Tidepools | major | breeding |
| Marine Neritic | Macroalgal/Kelp | major | non-breeding |
| Marine Neritic | Macroalgal/Kelp | major | breeding |
| Marine Neritic | Pelagic | suitable | non-breeding |
| Marine Neritic | Pelagic | suitable | breeding |
| Marine Neritic | Seagrass (Submerged) | major | non-breeding |
| Marine Neritic | Seagrass (Submerged) | major | breeding |
| Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | non-breeding |
| Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | breeding |
| Marine Neritic | Subtidal Rock and Rocky Reefs | major | non-breeding |
| Marine Neritic | Subtidal Rock and Rocky Reefs | major | breeding |
| Marine Neritic | Subtidal Sandy | major | non-breeding |
| Marine Neritic | Subtidal Sandy | major | breeding |
| Marine Neritic | Subtidal Sandy-Mud | major | non-breeding |
| Marine Neritic | Subtidal Sandy-Mud | major | breeding |
| Marine Oceanic | Epipelagic (0-200m) | suitable | non-breeding |
| Marine Oceanic | Mesopelagic (200-1000m) | suitable | non-breeding |
| Altitude | 0 - 100 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%) | Unknown | Unknown | ||||||
|
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| Climate change & severe weather | Temperature extremes | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Causing/Could cause fluctuations | Low Impact: 5 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Vulpes vulpes | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
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| Pollution | Industrial & military effluents - Oil spills | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
|
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| Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
|---|---|---|---|---|---|---|
| Pets/display animals, horticulture | - | - | International | Non-trivial | Recent |
Recommended citation
BirdLife International (2021) Species factsheet: Cepphus columba. Downloaded from
http://www.birdlife.org on 29/07/2021.
Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 29/07/2021.
