Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | C2a(ii) | C2a(ii) |
Year | Category | Criteria |
---|---|---|
2021 | Endangered | C2a(ii) |
2016 | Endangered | C2a(ii) |
2013 | Endangered | C2a(ii) |
2012 | Endangered | C2a(ii) |
2008 | Vulnerable | A2c; A3c; A4c |
2004 | Vulnerable | |
2000 | Vulnerable | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Threatened |
Migratory status | altitudinal migrant | Forest dependency | high |
Land-mass type |
continent |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 35,000 km2 | medium |
Extent of Occurrence (non-breeding) | 43,400 km2 | medium |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 1900-7100 mature individuals | medium | estimated | 2009 |
Population trend | decreasing | poor | inferred | 2015-2034 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
Generation length | 6.4 years | - | - | - |
Number of subpopulations | 1 | - | - | - |
Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: This species's breeding population in Important Bird Areas (IBAs) in Costa Rica has been estimated at 190-330 mature individuals (Sánchez et al. 2009). In 2007, the estimate for the breeding population in the IBAs of Panama was given as 1,050-4,245 mature individuals, which is regarded by some as an overestimate (J. Criado et al. in litt. 2007), and is limited by a lack of sufficient data from the core of its likely range in Panama, La Amistad International Park (G. Angehr in litt. 2011). In total, the IBAs in Costa Rica and Panama cover approximately 65% of the species's range. Extrapolating to the global range, the population is estimated at c. 1,900-7,100 mature individuals. This number however requires confirmation and updating due to the uncertainty surrounding the national estimate of Panama and the continuing decline in the population.
Trend justification: The population is undergoing a moderate decline (Partners in Flight 2019). The main driver of the decline is thought to be the loss and degradation of its habitat, particularly in the non-breeding range (Elizondo Sancho and Molina Mora 2020; Global Forest Watch 2021). Over the past three generations (19.2 years), tree cover within the non-breeding range has been lost at a rate of 8% (Global Forest Watch 2021). In recent years, forest loss has been accelerating: projecting the rate of forest loss since 2015 forward over the next three generations, it may amount to 12.5% over this period.
In view of the species's high dependence on primary forest, it is likely that population declines are additionally compounded by habitat degradation and faster than tree cover loss alone. The rate of population decline is therefore here placed in the band 10-19% over three generations.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Costa Rica | extant | native | yes | |||
Panama | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Costa Rica | Arenal-Monteverde |
Costa Rica | Central Volcanic Cordillera |
Costa Rica | Tilarán Highlands |
Panama | Cerro Santiago |
Panama | Fortuna Forest Reserve |
Panama | Golfo de los Mosquitos Forests |
Panama | La Amistad International Park |
Panama | Palo Seco Protection Forest |
Panama | Santa Fé National Park |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Lowland | major | resident |
Forest | Subtropical/Tropical Moist Montane | major | resident |
Altitude | 100 - 2100 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Scale Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Agriculture & aquaculture | Livestock farming & ranching - Agro-industry grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Future | Majority (50-90%) | Causing/Could cause fluctuations | Low Impact: 4 | ||||||
|
|||||||||
Transportation & service corridors | Roads & railroads | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
Purpose | Scale |
---|---|
Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2024) Species factsheet: Bare-necked Umbrellabird Cephalopterus glabricollis. Downloaded from
https://datazone.birdlife.org/species/factsheet/bare-necked-umbrellabird-cephalopterus-glabricollis on 23/12/2024.
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 23/12/2024.