LC
Saw-billed Hermit Ramphodon naevius



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2021 Least Concern
2016 Near Threatened A2c+3c+4c
2012 Near Threatened A2c+3c+4c
2008 Near Threatened A2c; A3c; A4c
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Near Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 378,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 175000-1710000 poor suspected 2021
Population trend Decreasing poor suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 1-9 - - -
Decline (10 years/3 generation past and future) 1-9 - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -

Population justification: The species is described as common in lowland forest, and less common at higher altitudes (Aleixo and Galetti 1997; Goerck 1999). It was extremely common in patches of Atlantic forest in São Paulo and Parana (Aleixo and Galetti 1997). Surveys on Ilha do Cardoso, São Paulo, estimated the population density at 87.6 ± 28.3 individuals per km2 (Marsden et al. 2003). The subpopulation structure is not known.

Based on the estimated area of tree cover with at least 30% canopy cover within the species's range in 2010 (88,300 km2; Global Forest Watch 2021), the above density estimate, and assuming that 5-25% of tree cover within the range is occupied, the population size is tentatively suspected to fall within the range 262,000 - 2,560,000 individuals, roughly equating to 175,000 - 1,710,000 mature individuals.

Trend justification: Based on remote sensing data on tree cover loss, approximately 4% of tree cover with at least 30% canopy cover was lost from the species's range over ten years to 2020 (Global Forest Watch 2021). Projecting forwards, it is estimated that up to 5% of tree cover will be lost from the species's range over the next ten years. Although the species is tolerant of logged and secondary forest, it is dependent on forest habitat and so its population size is suspected to be declining. The species's population size is therefore suspected to be declining of a rate of 1-9% per decade.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Brazil N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Brazil Santa Teresa
Brazil Reserva Biológica de Duas Bocas
Brazil Encostas da Região de Domingos Martins
Brazil Parque Estadual do Desengano e Entorno
Brazil Serra dos Órgãos
Brazil Serra do Tinguá
Brazil Maciços da Tijuca e Pedra Branca
Brazil Serra do Marumbi
Brazil Parque Estadual da Serra do Mar (entre Caraguatatuba e Picinguaba)
Brazil Área de Proteção Ambiental de Guaratuba
Brazil Região de Blumenau
Brazil Parque Estadual da Serra do Mar (entre Santos e São Sebastião)
Brazil Ilhabela State Park (Parque Estadual de Ilhabela IBA)
Brazil Maciço Florestal de Paranapiacaba
Brazil Guaraqueçaba / Jacupiranga / Cananéia
Brazil Estação Ecológica de Juréia-Itatins
Brazil Ilhas Comprida e Cananéia
Brazil Serra da Bocaina / Paraty / Angra dos Reis

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 900 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 Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations - Agro-industry plantations Timing Scope Severity Impact
Past, Unlikely to Return Majority (50-90%) Slow, Significant Declines Past Impact
Stresses
Ecosystem degradation, Ecosystem conversion
Energy production & mining Mining & quarrying Timing Scope Severity Impact
Past, Unlikely to Return Minority (<50%) Slow, Significant Declines Past Impact
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Commercial & industrial areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Transportation & service corridors Roads & railroads Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2022) Species factsheet: Ramphodon naevius. Downloaded from http://www.birdlife.org on 17/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 17/08/2022.