NT
Sentinel Rock-thrush Monticola explorator



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/Least Concern
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 -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 818,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - suspected 2019-2029
Rate of change over the past 10 years/3 generations (longer of the two periods) 20-29% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 20-29% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 20-29% - - -
Generation length 3.2 years - - -

Population justification: The global population size has not been quantified, but the species is described as fairly common above 1,500 m in South Africa and common above 2,500 m in Lesotho (del Hoyo et al. 2005). The species has been found at the following population densities in Lesotho: 30 breeding pairs per 32 km transect in the Sahlabathebe National Park (Kopij 2002); 29 breeding pairs per 54 km transect in the highlands, and 2 breeding pairs per 120 km in the foothills (Kopij 2015b). 11 pairs per 61.2 km transect were found in Afro-montane Themeda-Festuca grassland at 2,000 - 2,500 m above sea level, while 54 pairs were found per 45 km transect in Afro-alpine grassland at 2,500-3,500 m altitude (Kopij 2015a). 16 pairs per 104 km of rivers were found in the Upper Senque river drainages, while none were found in the Lower Senque drainages (Kopij 2013).

Trend justification: Declines in the western part of its range have been noted since the 1980s (Hockey et al. 2005; Taylor et al. 2015), but the reason for these declines is unknown. Lee et al. (2017) analysed Southern African Bird Atlas Project (SABAP) data (SABAP1 1987-1992; SABAP2 2007-2014. Note SABAP2 is ongoing but data taken from 2014) and suggested that this species is experiencing a decline in South Africa, Lesotho and Swaziland. Lee et al. (2017) suggest that reporting rate has declined 34.4%, range has declined 48.7% and core range has declined 38.5% between SABAPs (although the corrected population change metric suggests population declines may be lower than this). Declines may in part be due to incomplete sampling during SABAP2 and the time period for these declines is greater than 10 years, but it is precautionarily assessed that the species may be at least declining moderately rapidly over 3 generations.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Eswatini extant native yes
Lesotho extant native yes
Mozambique extant native yes
South Africa extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Pastureland suitable resident
Artificial/Terrestrial Plantations marginal resident
Artificial/Terrestrial Rural Gardens marginal resident
Grassland Subtropical/Tropical High Altitude major resident
Rocky areas (eg. inland cliffs, mountain peaks) major resident
Shrubland Subtropical/Tropical Dry suitable resident
Shrubland Subtropical/Tropical High Altitude suitable resident
Altitude 2000 - 3200 m Occasional altitudinal limits (min) 600 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Wood & pulp plantations - Small-holder plantations Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Ongoing Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation

Recommended citation
BirdLife International (2024) Species factsheet: Sentinel Rock-thrush Monticola explorator. Downloaded from https://datazone.birdlife.org/species/factsheet/sentinel-rock-thrush-monticola-explorator on 26/12/2024.
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 26/12/2024.