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Whistling Warbler Catharopeza bishopi
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Justification
This species qualifies as Endangered because it has a very small range, within which its habitat is declining in extent, area and quality. These reductions have probably resulted in a population decline.

Taxonomic source(s)
AOU. 1998. Check-list of North American birds. American Ornithologists' Union, Washington, D.C.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

Identification
14.5 cm. Boldly patterned, black-and-white warbler. Adult, blackish hood, upperparts and breast-band. Greyish on flanks with rest of underparts white. Broad white eye-ring. White tips to outertail feathers. Immature similar but brownish, dingier, and has small whitish spot by bill. Frequently cocks tail. Voice Rising series of notes increasing in volume and ending emphatically.

Distribution and population
Catharopeza bishopi is endemic to St Vincent (St Vincent and the Grenadines) in the Lesser Antilles, where it primarily occurs at Colonaire and Perserence valleys, and Richmond Peak (Raffaele et al. 1998). A total of 1,500-2,500 singing males was estimated in 1986 (Carr et al. 1990). The extent of suitable habitat has diminished from 140 km2 in the 1900s to c.80 km2 in 1986 (Carr et al. 1990).

Population justification
The population is estimated to number 3,000-5,000 individuals, roughly equating to 2,000-3,300 mature individuals.

Trend justification
There are no new data on population trends; however, the species is suspected to be declining at a slow rate, since habitat encroachment is likely to be on-going.

Ecology
It inhabits dense undergrowth and vine-tangles in primary rainforest, palm brake, elfin forest, secondary growth and borders (Andrle and Andrle 1976, Carr et al. 1990). Rainforest and palm brake are the most important, holding c.80% of the population (Carr et al. 1990). It is found at elevations of 300-1,100 m, but probably mostly below 600 m (Carr et al. 1990). The nest is built low in a sapling, and eggs are laid between April and July (Andrle and Andrle 1976, Carr et al. 1990).

Threats
Reductions in habitat have been caused by shifting agriculture, selective logging for charcoal production and illegal cultivation of cannabis (Carr et al. 1990). Mt Soufrière has erupted twice since 1900 (Raffaele et al. 1998).

Conservation Actions Underway
The population was surveyed in 1973 and 1986 (Andrle and Andrle 1976, Carr et al. 1990). Much of the central part of St Vincent was designated as a wildlife reserve in 1987, and an extensive environmental education programme has been developed (Carr et al. 1990). Many highland areas outside this reserve comprise very rugged and inaccessible terrain of negligible economic importance, and are not particularly susceptible to human disturbance (Carr et al. 1990). Conservation Actions Proposed
Monitor the population. Protect remaining habitat to prevent further reduction and fragmentation.

References
Andrle, R. F.; Andrle, P. R. 1976. The Whistling Warbler of St Vincent, West Indies. Condor 78: 236-243.

Carr, M.; Foster, J.; Gittings, T.; Morris, R. 1990. St Vincent Whistling Warbler expedition.

Raffaele, H.; Wiley, J.; Garrido, O.; Keith, A.; Raffaele, J. 1998. Birds of the West Indies. Christopher Helm, London.

Further web sources of information
Alliance for Zero Extinction (AZE) species/site profile. This species has been identified as an AZE trigger due to its IUCN Red List status and limited range.

Click here for more information about the Alliance for Zero Extinction (AZE)

Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Isherwood, I., Pople, R., Sharpe, C J, Wege, D.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2014) Species factsheet: Catharopeza bishopi. Downloaded from http://www.birdlife.org on 20/10/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/10/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Additional resources for this species

ARKive species - Whistling warbler (Catharopeza bishopi) 0

Key facts
Current IUCN Red List category Endangered
Family Parulidae (New World warblers)
Species name author (Lawrence, 1878)
Population size 2000-3300 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 80 km2
Country endemic? Yes
Links to further information
- Additional Information on this species