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(i) | C2a(i) |
Year | Category | Criteria |
---|---|---|
2017 | Endangered | C2a(i) |
2016 | Vulnerable | C2a(i) |
2012 | Vulnerable | C2a(i) |
2008 | Vulnerable | C2a(i) |
2004 | Vulnerable | |
2000 | Vulnerable | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Near Threatened |
Migratory status | not a migrant | Forest dependency | Medium |
Land mass type |
Land-mass type - continent |
Average mass | 18 g |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence breeding/resident (km2) | 123,000 | medium |
Number of locations | 11-100 | - |
Fragmentation | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
No. of mature individuals | 1000-2499 | poor | suspected | 2016 |
Population trend | Decreasing | medium | suspected | - |
Decline (3 years/1 generation past) | - | - | - | |
Decline (5 years/1 generation past) | - | - | - | |
Decline (10 years/1 generation past) | - | - | - | |
Decline (10 years/3 generation future) | - | - | - | |
Decline (10 years/3 generation past and future) | - | - | - | |
Number of subpopulations | 2-100 | - | - | - |
Largest subpopulations | - | - | - |
Population justification: It is generally rare (Butynski et al. 1997), and reporting rates have been dropping (S. Cichon, M. McQuillan and E. Meyjes in litt. 2016). Its population size had previously been estimated to be in the range of 2,500-4,999 mature individuals, but given the decline in reporting rate and a lack of recent sightings this is now likely to be an overestimate (S. Cichon, M. McQuillan and E. Meyjes in litt. 2016). Therefore, the population size is precautionarily suspected to fall in the range of 1,000-2,500 mature individuals with no subpopulation containing >250 mature individuals.
Trend justification: The species's population is suspected to be declining in line with the clearance and degradation of forest within its range, although the likely rate of decline has not been estimated.
Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
---|---|---|---|---|---|---|
Burundi | N | Extant | Yes | |||
Congo, The Democratic Republic of the | N | Extant | Yes | |||
Rwanda | N | Extant | Yes | |||
Uganda | N | Extant | Yes |
Country/Territory | IBA Name |
---|---|
Burundi | Kibira National Park |
Congo, The Democratic Republic of the | Virunga National Park |
Congo, The Democratic Republic of the | Forests west of Lake Edward |
Congo, The Democratic Republic of the | Kahuzi-Biega National Park |
Congo, The Democratic Republic of the | Itombwe Mountains |
Congo, The Democratic Republic of the | Mount Kabobo |
Rwanda | Volcans National Park |
Rwanda | Nyungwe National Park |
Uganda | Mgahinga Gorilla National Park |
Uganda | Bwindi Impenetrable National Park |
Uganda | Ruwenzori (Rwenzori) Mountains National Park |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Montane | major | resident |
Altitude | 1960 - 3400 m | Occasional altitudinal limits | 1550 - 3500 m |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Agriculture & aquaculture | Livestock farming & ranching - Small-holder grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
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 | ||||||
|
|||||||||
Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
---|---|---|---|---|---|---|
Pets/display animals, horticulture | - | - | International | Non-trivial | Recent |
Recommended citation
BirdLife International (2021) Species factsheet: Cryptospiza shelleyi. Downloaded from
http://www.birdlife.org on 16/01/2021.
Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 16/01/2021.