Data Zone
Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
Cramp, S. and Simmons, K.E.L. (eds). 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
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 | 378 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 44,100,000 | medium |
| Extent of Occurrence non-breeding (km2) | 42,900,000 | medium |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 400000-1499999 | poor | estimated | 2012 |
| Population trend | unknown | 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) | 10.9 | - | - | - |
Population justification: The European population alone was recently estimated at 304,000-742,000 mature individuals (BirdLife International 2015). Europe forms c.50-74% of the global range; thus, a very preliminary estimate of the global population size is 410,000-1,484,000 mature individuals, although further validation of this estimate is needed. The population is therefore roughly placed in the band 400,000-1,499,999 mature individuals.
Trend justification: The overall population trend is unclear. In North America, the population is increasing (based on BBS/CBC data: Butcher and Niven 2007). In Europe, the population is estimated to be decreasing by less than 25% in 32.7 years (three generations) (BirdLife International 2015).
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Belgium | extant | vagrant | yes | |||
| Canada | extant | native | yes | |||
| Croatia | extant | vagrant | ||||
| Czechia | extant | vagrant | ||||
| Denmark | extant | native | yes | yes | ||
| Estonia | extant | native | yes | |||
| Faroe Islands (to Denmark) | extant | native | yes | |||
| Finland | extant | native | yes | yes | ||
| France | extant | vagrant | yes | |||
| Germany | extant | native | yes | |||
| Greenland (to Denmark) | extant | native | yes | |||
| Iceland | extant | native | yes | |||
| Ireland | extant | native | yes | |||
| Latvia | extant | native | yes | |||
| Netherlands | extant | vagrant | ||||
| Norway | extant | native | yes | |||
| Poland | extant | native | yes | yes | ||
| Russia | extant | native | yes | |||
| Russia (Asian) | extant | native | yes | |||
| Russia (Central Asian) | extant | vagrant | ||||
| Russia (European) | extant | native | yes | |||
| Slovenia | extant | vagrant | yes | |||
| Spain | extant | vagrant | yes | |||
| St Pierre and Miquelon (to France) | extant | native | yes | |||
| Svalbard and Jan Mayen Islands (to Norway) | extant | native | yes | yes | ||
| Sweden | extant | native | yes | |||
| United Kingdom | extant | native | yes | |||
| USA | extant | native | 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 | breeding |
| Marine Intertidal | Tidepools | major | breeding |
| Marine Neritic | Macroalgal/Kelp | major | non-breeding |
| Marine Neritic | Macroalgal/Kelp | major | breeding |
| Marine Neritic | Pelagic | marginal | resident |
| 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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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Named species | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
|||||||||
| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Neovison vison | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Pollution | Agricultural & forestry effluents - Herbicides and pesticides | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
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| Pollution | Industrial & military effluents - Oil spills | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
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| Pollution | Industrial & military effluents - Type Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
| Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
|---|---|---|---|---|---|---|
| Pets/display animals, horticulture | - | - | international | non-trivial | recent |
Recommended citation
BirdLife International (2023) Species factsheet: Cepphus grylle. Downloaded from
http://datazone.birdlife.org/species/factsheet/black-guillemot-cepphus-grylle on 01/06/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 01/06/2023.
