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.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | B1ab(ii,iii) | B1ab(ii,iii); D2 |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Endangered | B1ab(ii,iii) |
| 2012 | Endangered | B1ab(ii,iii) |
| 2008 | Endangered | B1a+b(ii,iii) |
| 2004 | Vulnerable | |
| 2000 | Vulnerable | |
| 1996 | Critically Endangered | |
| 1994 | Critically Endangered | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | high |
| Land-mass type |
Land-mass type - continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 470 | medium |
| Number of locations | 4 | - |
| Severely fragmented? | yes | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Number of mature individuals | 3000-4000 | medium | estimated | 2015 |
| Population trend | decreasing | poor | suspected | 1998-2008 |
| Decline % (10 years/3 generations future) | 1-19 | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Generation length (years) | 4.2 | - | - | - |
Population justification: The population size is has been estimated at 5,000-6,000 individuals (Sharpe 2015, Sharpe in litt. 2015). This equates to 3,333-4,000 mature individuals, rounded here to 3,000-4,000 mature individuals.
Trend justification: This is an understorey species that is likely to be affected by forest degradation, thus it is suspected to be declining at a rate of 1-19% over ten years.
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Venezuela | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Venezuela | Peninsula de Paria National Park (Parque Nacional Península de Paria IBA) |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 530 - 1200 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops - Agro-industry farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
| Future | Whole (>90%) | Unknown | Unknown | ||||||
|
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| Energy production & mining | Oil & gas drilling | Timing | Scope | Severity | Impact | ||||
| Future | Majority (50-90%) | Rapid Declines | Low Impact: 5 | ||||||
|
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Recommended citation
BirdLife International (2023) Species factsheet: Hylonympha macrocerca. Downloaded from
http://datazone.birdlife.org/species/factsheet/scissor-tailed-hummingbird-hylonympha-macrocerca on 03/10/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 03/10/2023.
