Cape Rockjumper (Chaetops frenatus) - BirdLife species factsheet

Cape Rockjumper Chaetops frenatus

Current view: Data table and detailed info

Taxonomy

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.

IUCN Red list criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2021	Near Threatened	A2bc+3bc+4bc
2017	Near Threatened	A2bc+3bc+4bc
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Near Threatened
1988	Lower Risk/Least Concern

Species attributes

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land mass type		Average mass	-

Distribution

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	105,000	medium
Number of locations		-
Severely Fragmented		-

Population and trend

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	21700-39600	medium	estimated	2015
Population trend	decreasing		inferred	-
Decline (3 years/1 generation past)		-	-	-
Decline (5 years/1 generation past)		-	-	-
Decline (10 years/1 generation past)		-	-	-
Decline (10 years/3 generation future)	11-28	-	-	-
Decline (10 years/3 generation past and future)	11-28	-	-	-
Number of subpopulations		-	-	-
Percentage in largest subpopulation		-	-	-
Generation length (yrs)	3.8	-	-	-

Population justification: Lee and Barnard (2016) estimated the population to be 32,551-59,289 individuals. This is roughly equivalent to 21,700-39,526 mature individuals, and rounded here to 21,700-39,600 mature individuals.

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 reduction between SABAPs as 32% (SABAP1 1987-1992; SABAP2 2007-ongoing), with a reporting rate decline of 31%. However, Lee et al. (2017) place the range decline at 25%, but with a reporting rate decline of 53.4%. Over three generations, these rates are equivalent to declines of 11 - 28%. Given that climate change may be having a particular impact on this species (Oswald et al. 2018), this decline is suspected to continue into the future.

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding	Non-breeding	Passage
South Africa	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
South Africa	Anysberg Nature Reserve
South Africa	Boland Mountains
South Africa	Cedarberg - Koue Bokkeveld complex
South Africa	Kouga - Baviaanskloof Complex
South Africa	Langeberg Mountains
South Africa	Outeniqua mountains
South Africa	Swartberg mountains

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Rocky areas (eg. inland cliffs, mountain peaks)		suitable	resident
Shrubland	Mediterranean-type Shrubby Vegetation	major	resident
Shrubland	Subtropical/Tropical High Altitude	major	resident
Altitude	0 - 2300 m	Occasional altitudinal limits

Threats & impact

Threat (level 1)

Threat (level 2)

Impact and Stresses

Climate change & severe weather

Habitat shifting & alteration

Timing

Scope

Severity

Impact

Ongoing

Whole (>90%)

Unknown

Stresses
Indirect ecosystem effects, Ecosystem degradation

Invasive and other problematic species, genes & diseases

Invasive non-native/alien species/diseases - Unspecified species