email a friend
printable version
CR
Stresemann's Bristlefront Merulaxis stresemanni

IUCN Red List Criteria

Critically Endangered B1ab(i,ii,iii,v);C2a(i,ii);D 
Endangered A2c+3c+4c;B1ab(i,ii,iii,v);C2a(i,ii);D1 
Vulnerable B1ab(i,ii,iii,v);C2a(i,ii);D 

IUCN Red List history

Year Category
2013 Critically Endangered
2012 Critically Endangered
2010 Critically Endangered
2009 Critically Endangered
2008 Critically Endangered
2006 Critically Endangered
2005 Critically Endangered
2004 Critically Endangered
2000 Critically Endangered
1996 Critically Endangered
1994 Critically Endangered
1988 Threatened

Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 35 medium
Number of locations 1 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1-49 poor Estimated 2011
Population trend Decreasing poor -
Number of subpopulations 1 - - -
Largest subpopulation 1-49 - - -
Population justification: In the Jequitinhonha valley (the sole currently known population), at least four birds were found in a 100 ha area, but it was thought unlikely that this density could be extrapolated for the whole 5,000 ha partly fragmented patch of forest (R. Ribon in litt. 2006). Surveys of the Macarani / Bandeira area near Balbina (Sossego do Arrebol Forest) found just six individuals: five females and a single male (Fundação Biodiversitas in litt. 2010). Three males were recorded in 2012 (WikiAves 2013) but there are likely no more than 10-15 birds in total and none have been found in other forest fragments surveyed (R. Ribon in litt. 2011). It is therefore now suspected that there may be fewer than 50 birds remaining, and the population is placed in the band 1-49 mature individuals.
Trend justification: Suspected based on rates of habitat loss and degradation.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Brazil Native Extant Yes      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Brazil Bandeira / Macarani site factsheet
Brazil Una site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Dry major resident
Altitude 0 - 800 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Scale Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Whole (>90%) Rapid Declines High Impact: 8
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Ongoing Whole (>90%) Rapid Declines High Impact: 8
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Merulaxis stresemanni. Downloaded from http://www.birdlife.org on 21/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/08/2014.

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 Critically Endangered
Family Rhinocryptidae (Tapaculos)
Species name author Sick, 1960
Population size 1-49 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 35 km2
Country endemic? Yes
Links to further information
- Summary information on this species