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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Near Threatened | B1b(iii) |
| 2012 | Near Threatened | B1ab(iii) |
| 2008 | Near Threatened | B1a+b(iii) |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1996 | Vulnerable | |
| 1994 | Vulnerable | |
| 1988 | Near Threatened |
| Migratory status | nomadic | Forest dependency | high |
| Land-mass type |
shelf island |
Average mass | 55 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 8,700 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 1500-7000 mature individuals | - | - | 1998 |
| Population trend | decreasing | poor | suspected | 2008-2025 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Generation length | 5.7 years | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The global population size has apparently not been formally quantified, but the species is described as very uncommon and there are thought to be fewer than 10,000 individuals. On this basis it is placed in the band 2,500-9,999 individuals, equating to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.
Trend justification: There are no data on population trends, but the species is suspected to be in decline at a slow to moderate rate, owing to habitat clearance.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Philippines | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Philippines | Lake Lanao |
| Philippines | Mount Apo |
| Philippines | Mount Busa-Kiamba |
| Philippines | Mount Kaluayan - Mount Kinabalian Complex |
| Philippines | Mount Kampalili-Puting Bato |
| Philippines | Mount Kitanglad |
| Philippines | Mount Malindang |
| Philippines | Mount Matutum |
| Philippines | Mount Piagayungan |
| Philippines | Mount Sinaka |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 1000 - 2500 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Mindanao Lorikeet Trichoglossus johnstoniae. Downloaded from
https://datazone.birdlife.org/species/factsheet/mindanao-lorikeet-trichoglossus-johnstoniae on 22/11/2024.
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 22/11/2024.