Biology:Cape rock thrush

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Short description: Species of bird

Cape rock thrush
Male in Marakele N.P., South Africa
Female at Suikerbosrand N.R.

File:Cape Rock Thrush (Monticola rupestris) (W1CDR0001436 BD4).ogg

Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Muscicapidae
Genus: Monticola
Species:
M. rupestris
Binomial name
Monticola rupestris
(Vieillot, 1818)

The Cape Rock-Thrush (Monticola rupestris) is a member of the bird family Muscicapidae. This rock-thrush breeds in eastern and southern South Africa, Lesotho and Eswatini. It is a common endemic resident, non-migratory apart from seasonal altitudinal movements in some areas.  

Taxonomy  

The Cape Rock-Thrush belongs to the Kingdom Animalia, Phylum Chordata, Class Aves, Order Passeriformes, Family Muscicapidae, Genus Monticola,[2] and Species rupestris.[3] The bird was named for its geographic location in the Cape region of southern Africa and its preference for rocky habitats, where it lives among rocks and cliffs.[4] The scientific name Monticola rupestris reinforces this, with "Monticola" meaning "mountain-dweller"[5] and "rupestris" meaning "living among rocks."[6]

Description

This bird is large and stocky for a rock thrush, measuring 21-22 cm (8.26in) in length.[3] The adult male during the summer features a blue-grey head, orange underparts and outer tail feathers, and brown wings and back.[3][7] Females have a brown head and richer orange underparts compared to other female rock thrushes.[3]

Vocalizations are an important aspect of this species’ behavior. The male produces a whistled song described as “tsee-tsee-tseet-chee-chweeeoo” and is known to mimic other bird species.[8] Another commonly heard call is a sequence rendered as “wiit liio-o pii’p sii piiu chiwii trrr,” consisting of high-pitched whistles and trills repeated rhythmically during territorial displays.[8]

The Cape Rock-Thrush has a life expectancy of 3.5 years.[3]

Diet

The Cape Rock-Thrush has a diverse diet that includes invertebrates and small vertebrates. Documented prey consists of spiders, millipedes, centipedes, mollusks, and small frogs.[3]The species also consumes fruits, seeds, and nectar, especially when insect availability is low.[3] Foraging occurs on the ground and among rocks and low vegetation, using a combination of hopping and scanning to locate food.[3]

Habitat and Distribution

The species inhabits mountainous rocky environments with scattered vegetation, resembling the habitats of the Sentinel rock thrush and the common rock thrush.[3] It is typically found on rocky mountain slopes at elevations ranging from 1,200 to 3,000 meters (about 1.86 mi). [3] Key regions include the Drakensberg Mountains, Eastern Cape, KwaZulu-Natal, Mpumalanga, and Limpopo provinces in South Africa, as well as highland areas in Lesotho and Eswatini. [3]

Cape rock thrush male calling, Kogelberg Nature Reserve

In addition to its ecological and behavioral characteristics, the Cape Rock-Thrush plays a role in the montane ecosystems of southern Africa.[3] Its tendency to sing from elevated perches during territorial displays makes it a conspicuous species, frequently observed by birdwatchers and researchers.[9] The species is solitary or found in pairs during the breeding season, although juveniles remain near parental territories for short periods after fledging.[10] The Cape Rock-Thrush is generally sedentary,[11] but in winter it shifts to lower elevations, leaving the high mountain zones of Lesotho and the Drakensberg.[3]

Breeding

Cape rock thrush couple, Kogelberg Nature Reserve

Breeding takes place in these rugged landscapes, where the birds construct cup-shaped nests in rock cavities or on ledges.[3] Nest materials consist of grass, moss, and feathers, and the female is primarily responsible for building.[3] Clutches usually contain two to three pale blue or greenish eggs, with an incubation period of approximately 13 to 15 days.[3] Courtship behavior includes the male singing from elevated perches, wing flicking, and occasionally offering food to the female.[12]

Conservation

The Cape Rock-Thrush is currently classified as Least Concern by the IUCN, with stable population trends across its range. [3] However, localized declines have occurred due to habitat loss caused by urban expansion, mining, and increased tourism in mountainous regions.[3]

Although its conservation status remains stable, ongoing habitat fragmentation presents a potential threat to its long-term survival, particularly in areas undergoing rapid development or land-use changes.[3] Conservation efforts aimed at preserving montane habitats and managing tourism in sensitive regions are essential for maintaining healthy populations. [3] As a member of the Muscicapidae family, the Cape Rock-Thrush exemplifies the ecological significance of southern Africa’s avian biodiversity.[3]


References

  1. ↑ BirdLife International (2016). "Monticola rupestris". IUCN Red List of Threatened Species 2016. doi:10.2305/IUCN.UK.2016-3.RLTS.T22708227A94153827.en. https://www.iucnredlist.org/species/22708227/94153827. Retrieved 12 November 2021. 
  2. ↑ "Cape Rock Thrush bird photo call and song/ Monticola rupestris (Turdus rupestris)" (in en). https://dibird.com/species/cape-rock-thrush/. 
  3. ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 IUCN (2024-06-12) (in en). Monticola rupestris: BirdLife International: The IUCN Red List of Threatened Species 2024: e.T22708227A263844813 (Report). International Union for Conservation of Nature. doi:10.2305/iucn.uk.2024-2.rlts.t22708227a263844813.en. https://www.iucnredlist.org/species/22708227/263844813. 
  4. ↑ Collar, Nigel (2020). "Cape Rock-Thrush (Monticola rupestris), version 1.0" (in en). Birds of the World. doi:10.2173/bow.carthr1.01. ISSN 2771-3105. https://birdsoftheworld.org/bow/species/carthr1/cur/introduction. 
  5. ↑ "MONTICULE - Definition & Meaning - Reverso English Dictionary" (in en). https://dictionary.reverso.net/english-definition/monticule. 
  6. ↑ "Rupestrian definition and meaning | Collins English Dictionary" (in en). https://www.collinsdictionary.com/dictionary/english/rupestrian. 
  7. ↑ Leisure, Avian (2012-08-10). "Rock Thrushes of South Africa - Birding Tours | Avian Leisure" (in en-ZA). https://www.avianleisure.com/rock-thrushes-of-south-africa/. 
  8. ↑ 8.0 8.1 "Varied Thrush Sounds, All About Birds, Cornell Lab of Ornithology" (in en). https://www.allaboutbirds.org/guide/Varied_Thrush/sounds. 
  9. ↑ "Birds of the World - Comprehensive life histories for all bird species and families" (in en). 2025. https://birdsoftheworld.org/bow/home. 
  10. ↑ "Birds of the World - Comprehensive life histories for all bird species and families" (in en). 2025. https://birdsoftheworld.org/bow/home. 
  11. ↑ "BirdLife DataZone" (in en). https://datazone.birdlife.org/search?search=cape%20rock%20thrush. 
  12. ↑ "Cape Rock-Thrush - eBird" (in en). https://ebird.org/species/carthr1. 
  • Clement and Hathaway, Thrushes ISBN 0-7136-3940-7
  • Sinclair, Hockey and Tarboton, SASOL Birds of Southern Africa, ISBN 1-86872-721-1

Wikidata ☰ Q1589149 entry




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