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State of Birds
Threatened bird ofthe day: Feb 10, 2010 Taliabu Masked-owl Tyto nigrobrunnea
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Justification This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Family/Sub-family Estrildidae
Species name author (Cabanis, 1851)
Taxonomic source(s) Dowsett and Forbes-Watson (1993), Sibley and Monroe (1990, 1993)
Population estimate
Population trend
Range estimate (breeding/resident)
Country endemic?
unknown
unset
86,500 km2
No
Range & population This species is endemic to Saudi Arabia and Yemen. It occurs in the mesic uplands of the Tihamah foothills (occasionally straying onto the lowland Tihamah proper (Jennings 1995)), including the eastern fringe of the montane plateau in Yemen (Christensen and Porter 1987). It is most frequently recorded in the southern Tihamah foothills and the lower slopes and Wadis of the western escarpments in Yemen. It is also found locally along the south coast of Yemen east to Wadi al-Jahr and, apparently disjunctly, in the extensively irrigated intensive agricultural areas of Wadi Hadramawt between Shibam and Tarim (Martins et al. 1996).
Important Bird Areas Click here to view map showing IBAs where species is recorded and triggers any of the IBA criteria.
Ecology: This species is highly social, and occurs from 250-2,500 m in fertile cultivated Wadis, plains, rocky hillsides and terraced slopes, usually with a dense cover of trees and bushes (Meinertzhagen 1954). The species roosts communally in this dense vegetation, and recently fledged juveniles have been recorded in May (Martins et al. 1996). It has become closely associated with regularly irrigated agricultural areas (especially cereal cultivation) which provide accessible drinking water. In a survey between July and September 1982-85, 73.5% of observations were in areas with flowing water. Modern irrigation techniques (increasing farmed areas adjacent to surface water) are beneficial to the species.
Threats Recent use of imported agricultural machinery in Yemen has destroyed some traditional sites (Christensen and Porter 1987), particularly those in the Tihamah foothills (an area characterised by seasonally heavy precipitation and with a water table close to ground level for short periods annually) where local environmental factors used to maintain localised small marshes and damp areas with Typha stands until c.1985 when agricultural techniques began to change. Regular roost sites are being destroyed through burning and land-use change.
References Meinertzhagen 1954, Christensen and Porter 1987, Jennings 1995, Martins et al. 1996
Text account compilers Stuart Butchart (BirdLife International), Jonathan Ekstrom (BirdLife International), Sally Fisher (BirdLife International), Matt Harding (BirdLife International)
IUCN Red List evaluators Jeremy Bird (BirdLife International), Stuart Butchart (BirdLife International)
Recommended citation BirdLife International (2009) Species factsheet: Estrilda rufibarba. Downloaded from http://www.birdlife.org on 10/2/2010
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
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