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 | 991.0 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 80,700,000 | medium |
| Extent of Occurrence non-breeding (km2) | 86,100,000 | medium |
| Number of locations | - | |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | poor | estimated | 2009 | |
| Population trend | Increasing | 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 | - | - | - | |
| Largest subpopulations | - | - | - | |
| Generation length (yrs) | 15.1 | - | - | - |
Population justification: The global population is estimated to number >18,000,000 individuals (del Hoyo et al. 1996). The European population is estimated at 2,350,000-3,060,000 mature individuals (BirdLife International 2015).
Trend justification: In North America, the population is increasing (based on BBS/CBC data: Butcher and Niven 2007). Although a number of populations in Europe are increasing, including in the UK (which holds nearly half the European population) since 2000 (JNCC 2014), a recent sharp decline was observed in Iceland (where nearly a quarter of the European population is found) since 2005. As a result of the reported decline in Iceland, the estimated and projected rate of decline of the European population size over the period 2005-2050 (three generations) varies from 25% to more than 50% (BirdLife International 2015).
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Algeria | U | Extant | ||||
| Belgium | N | Extant | Yes | |||
| Bulgaria | V | Extant | ||||
| Canada | N | Extant | Yes | |||
| Cape Verde | U | Extant | ||||
| Czechia | V | Extant | ||||
| Denmark | N | Extant | Yes | Yes | ||
| Estonia | N | Extant | Yes | |||
| Faroe Islands (to Denmark) | N | Extant | Yes | |||
| Finland | N | Extant | Yes | Yes | ||
| France | N | Extant | Yes | Yes | ||
| Gambia | U | Extant | ||||
| Germany | N | Extant | Yes | |||
| Gibraltar (to UK) | V | Extant | Yes | |||
| Greenland (to Denmark) | N | Extant | Yes | |||
| Iceland | N | Extant | Yes | |||
| Ireland | N | Extant | Yes | |||
| Italy | N | Extant | ||||
| Japan | N | Extant | ||||
| Latvia | N | Extant | Yes | |||
| Lithuania | N | Extant | Yes | |||
| Malta | V | Extant | ||||
| Mauritania | V | Extant | ||||
| Mexico | N | Extant | ||||
| Monaco | U | Extant | ||||
| Morocco | V | Extant | ||||
| Netherlands | N | Extant | Yes | |||
| North Korea | N | Extant | Yes | |||
| Norway | N | Extant | Yes | Yes | ||
| Poland | N | Extant | Yes | |||
| Portugal | N | Extant | Yes | |||
| Romania | V | Extant | ||||
| Russia | N | Extant | Yes | |||
| Russia (Asian) | N | Extant | Yes | |||
| Russia (European) | N | Extant | Yes | |||
| Senegal | U | Extant | ||||
| South Korea | N | Extant | ||||
| Spain | N | Extant | Yes | |||
| St Pierre and Miquelon (to France) | N | Extant | Yes | Yes | ||
| Svalbard and Jan Mayen Islands (to Norway) | N | Extant | Yes | |||
| Sweden | N | Extant | Yes | |||
| Switzerland | V | Extant | ||||
| Tunisia | U | Extant | ||||
| United Kingdom | N | Extant | Yes | |||
| USA | N | Extant | Yes | |||
| Western Sahara | U | Extant |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | major | breeding |
| Marine Neritic | Macroalgal/Kelp | major | breeding |
| Marine Neritic | Macroalgal/Kelp | major | non-breeding |
| Marine Neritic | Pelagic | major | non-breeding |
| Marine Neritic | Pelagic | major | 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 | Epipelagic (0-200m) | suitable | breeding |
| Marine Oceanic | Mesopelagic (200-1000m) | suitable | non-breeding |
| Marine Oceanic | Mesopelagic (200-1000m) | suitable | breeding |
| Altitude | 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 | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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| Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
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| Climate change & severe weather | Temperature extremes | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant 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 |
|---|---|---|---|---|---|---|
| Food (human) | Whole | Adults and juveniles | Wild | Non-trivial | Recent | |
| Food (human) | Whole | Eggs | Wild | Non-trivial | Historical | |
| Food - human | - | - | - | Non-trivial | Recent | |
| Food - human | - | - | Non-trivial | Recent | ||
| Pets | Whole | Adults and juveniles | Wild | International | Non-trivial | Recent |
| Pets/display animals, horticulture | - | - | - | International | Non-trivial | Recent |
| Pets/display animals, horticulture | - | - | International | Non-trivial | Recent |
Recommended citation
BirdLife International (2019) Species factsheet: Uria aalge. Downloaded from
http://www.birdlife.org on 13/11/2019.
Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 13/11/2019.
