Crithagra leucoptera (del Hoyo and Collar 2016) was previously placed in the genus Serinus and listed as S. leucopterus following Dowsett & Forbes-Watson (1993); Sibley & Monroe (1990, 1993).
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.
|2000||Lower Risk/Least Concern|
|1994||Lower Risk/Near Threatened|
|Migratory status||not a migrant||Forest dependency||Low|
|Land mass type||Average mass||-|
|Extent of Occurrence breeding/resident (km2)||119,000||medium|
|Number of locations||-|
|Value||Data quality||Derivation||Year of estimate|
|No. of mature individuals||250000-600000||medium||estimated||2015|
|Decline (3 years/1 generation past)||-||-||-|
|Decline (5 years/1 generation past)||-||-||-|
|Decline (10 years/1 generation past)||-||-||-|
|Decline (10 years/3 generation future)||20-25||-||-||-|
|Decline (10 years/3 generation past and future)||20-25||-||-||-|
|Number of subpopulations||1||-||-||-|
|Percentage in largest subpopulation||100||-||-||-|
Population justification: Lee and Barnard (2016) estimate the population at 395,257-831,202 individuals. This roughly equates to 263,500-554,130 mature individuals, placed here in the range 250,000-600,000 mature individuals.
Based on its dispersal ability and ability to tolerate burned Fynbos (Taylor et al. 2015), it is assumed that this species functions as one subpopulation.
Trend justification: The species is thought to be undergoing a moderately rapid decline, as implied by range and reporting rate reductions between Southern African Bird Atlas Projects (SABAP). Lee and Barnard (2016) place the range and reporting rate reduction between SABAPs (SABAP1 1987-1992; SABAP2 2007-ongoing) as 32%, though Lee et al. (2017) place the range decline at 24%. These rates are equivalent to a rate of decline of c.11-15% over 3 generations. The species is also likely experiencing habitat degradation from the spread of alien vegetation within the Fynbos biome, and from increases in temperature and changes in fire patterns due to climate change (Lee and Bernard 2016). It therefore suspected that the rate of decline overall falls in the band of 20-25%, and this decline is suspected to continue into the future as climate change continues.
|South Africa||Kouga - Baviaanskloof Complex|
|South Africa||Cedarberg - Koue Bokkeveld complex|
|South Africa||Swartberg mountains|
|South Africa||Boland Mountains|
|South Africa||Anysberg Nature Reserve|
|South Africa||Outeniqua mountains|
|South Africa||Langeberg Mountains|
|Habitat (level 1)||Habitat (level 2)||Importance||Occurrence|
|Shrubland||Mediterranean-type Shrubby Vegetation||major||resident|
|Altitude||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%)||Negligible declines||Low Impact: 4|
|Climate change & severe weather||Habitat shifting & alteration||Timing||Scope||Severity||Impact|
|Invasive and other problematic species, genes & diseases||Invasive non-native/alien species/diseases - Unspecified species||Timing||Scope||Severity||Impact|
BirdLife International (2022) Species factsheet: Crithagra leucoptera. Downloaded from http://www.birdlife.org on 04/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 04/12/2022.