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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
| 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) | 1,090,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 1,650,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | estimated | 2001 |
| Population trend | increasing | - | suspected | - |
| Generation length | 11.5 years | - | - | - |
Population justification: The population is estimated to number 1,000-10,000 individuals.
Trend justification: The population is suspected to be increasing following a reduction in persecution (del Hoyo et al. 1996).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Chile | extant | native | yes | |||
| Ecuador | extant | vagrant | yes | |||
| Falkland Islands (Malvinas) | extant | uncertain | yes | |||
| Panama | extant | vagrant | yes | |||
| Peru | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Chile | Costa sur de Arica |
| Chile | Desembocadura del Río Lluta |
| Chile | Desembocadura del Río Loa |
| Peru | Pantanos de Villa |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | major | resident |
| Marine Intertidal | Rocky Shoreline | major | resident |
| Marine Neritic | Macroalgal/Kelp | major | resident |
| Marine Neritic | Pelagic | suitable | 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 |
| Altitude | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Human intrusions & disturbance | Recreational activities | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
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| Residential & commercial development | Commercial & industrial areas | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
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Recommended citation
BirdLife International (2024) Species factsheet: Belcher's Gull Larus belcheri. Downloaded from
https://datazone.birdlife.org/species/factsheet/belchers-gull-larus-belcheri 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.