Data Zone
Taxonomic note
Following Kennedy and Spencer (2014) the genus Phalacrocorax has been divided into six genera, with P. auritus, P. brasilianus and P. harrisi moved into Nannopterum (HBW and BirdLife International 2018).
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.
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.
Handbook of the Birds of the World and BirdLife International. 2018. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 3. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v3_Nov18.zip.
Kennedy, Martyn & Spencer, Hamish. 2014. Classification of the Cormorants of the World. Molecular phylogenetics and evolution. 79: 249-257.
| 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 | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 28,100,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 21,500,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | estimated | 2009 |
| Population trend | increasing | - | suspected | - |
| Generation length | 8.6 years | - | - | - |
Trend justification: The overall population trend is increasing, although some populations may be stable and others have unknown trends (Delany and Scott 2006). In North America, this species has undergone a large and statistically significant increase over the last 40 years (2200% increase over 40 years, equating to a 120% increase per decade; data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Antigua and Barbuda | extant | native | ||||
| Bahamas | extant | native | ||||
| Barbados | extant | native | ||||
| Belize | extant | native | ||||
| Bermuda (to UK) | extant | native | yes | |||
| Bonaire, Sint Eustatius and Saba (to Netherlands) | extant | vagrant | ||||
| Canada | extant | native | yes | yes | ||
| Cayman Islands (to UK) | extant | native | ||||
| Cuba | extant | native | ||||
| Curaçao (to Netherlands) | extant | vagrant | ||||
| Dominica | extant | native | ||||
| Dominican Republic | extant | native | ||||
| Guadeloupe (to France) | extant | native | ||||
| Guatemala | extant | uncertain | ||||
| Haiti | extant | native | ||||
| Ireland | extant | vagrant | ||||
| Jamaica | extant | vagrant | ||||
| Martinique (to France) | extant | native | ||||
| Mexico | extant | native | ||||
| Montserrat (to UK) | extant | native | ||||
| Portugal | extant | vagrant | ||||
| Puerto Rico (to USA) | extant | native | ||||
| Sint Maarten (to Netherlands) | extant | vagrant | ||||
| St Kitts and Nevis | extant | native | ||||
| St Lucia | extant | native | ||||
| St Pierre and Miquelon (to France) | extant | native | yes | yes | ||
| St Vincent and the Grenadines | extant | native | ||||
| Turks and Caicos Islands (to UK) | extant | native | ||||
| United Kingdom | extant | vagrant | ||||
| USA | extant | native | yes | |||
| Virgin Islands (to UK) | extant | vagrant | ||||
| Virgin Islands (to USA) | extant | vagrant |
| Country/Territory | IBA Name |
|---|---|
| Canada | Balabas Island |
| Canada | Pelee Island Archipelago |
| Canada | Presqu'ile Provincial Park |
| Canada | South Long Island |
| Cuba | Humedal Sur de Pinar del Río |
| Cuba | Río Máximo |
| Mexico | Agiabampo |
| Mexico | Archipiélago Loreto |
| Mexico | Bahía e Islas de San Jorge |
| Mexico | Bahía Magdalena-Almejas |
| Mexico | Bahía Navachiste |
| Mexico | Complejo Lagunar Ojo de Liebre |
| Mexico | Estero Cardonal |
| Mexico | Estero Santa Cruz |
| USA | East Sand Island |
| USA | Outer Banks Inshore Ocean |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| 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 |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | breeding |
| Altitude | 0 - 2000 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Pollution | Agricultural & forestry effluents - Herbicides and pesticides | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Minority (<50%) | Rapid Declines | Past Impact | ||||||
|
|||||||||
| Purpose | Scale |
|---|---|
| Food - human | subsistence, national |
| Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2024) Species factsheet: Double-crested Cormorant Nannopterum auritum. Downloaded from
https://datazone.birdlife.org/species/factsheet/double-crested-cormorant-nannopterum-auritum on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/11/2024.