email a friend
printable version
EN
Streaked Reed-warbler Acrocephalus sorghophilus

IUCN Red List Criteria

Critically Endangered  
Endangered C2a(i,ii) 
Vulnerable C2a(ii) 

IUCN Red List history

Year Category
2013 Endangered
2012 Vulnerable
2008 Vulnerable
2004 Vulnerable
2000 Vulnerable
1996 Vulnerable
1994 Vulnerable
1988 Threatened

Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type continent
Average mass -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1000-2499 poor Estimated 2013
Population trend Decreasing poor -
Number of subpopulations 1 - - -
Largest subpopulation 1000-2499 - - -
Generation length (yrs) 4.4 - - -
Population justification: The global population is assumed to be very small, i.e. fewer than 2,500 mature individuals, based on the paucity of recent records (Round and Allen 2010); it is placed in the band for 1,000-2,499 mature individuals, equivalent to 1,500-3,800 individuals in total.
Trend justification: A moderate and continuing population decline is suspected, owing to the paucity and declining frequency of recent records (Round and Allen 2010) and on-going habitat destruction in its wintering grounds (D. Allen in litt. 2012).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
China (mainland) Native Extant Yes   Yes  
Philippines Native Extant   Yes Yes  
Taiwan (China) Native Extant     Yes  

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Philippines Candaba swamp site factsheet
Philippines Cuernos de Negros site factsheet
Philippines Rajah Sikatuna Protected Landscape site factsheet
Philippines University of the Philippines Land Grants (Pakil and Real) site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land marginal passage
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops / Small-holder farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Marine & freshwater aquaculture / Industrial aquaculture Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Marine & freshwater aquaculture / Industrial aquaculture Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Commercial & industrial areas Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Acrocephalus sorghophilus. Downloaded from http://www.birdlife.org on 20/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/08/2014.

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.

Key facts
Current IUCN Red List category Endangered
Family Sylviidae (Old World warblers)
Species name author (Swinhoe, 1863)
Population size 1000-2499 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) -
Country endemic? No
Links to further information
- Summary information on this species