• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2020	Near Threatened	B2ab(i,ii,iii,iv)
2019	Near Threatened	B2ab(ii,iii)
2016	Near Threatened	B1ab(i,ii,iii,v)
2012	Near Threatened	B1ab(i,ii,iii,v)
2008	Near Threatened	B1a+b(i,ii,iii,v)
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Near Threatened
1988	Near Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	64,700 km2	medium
Area of Occupancy (breeding/resident)	120 km2
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	35000 - 100000 mature individuals	poor	suspected	2020
Population trend	decreasing	-	suspected	-
Generation length	2.08 years	-	-	-
Number of subpopulations	4-10	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: This species is described as 'relatively common in its area of occurrence' (Almeida and Raposo 1999, Machado et al. 2018). Based on the first quartile and median population densities of other hummingbird species in similar habitats, the area of the species's mapped range and assuming 10-14% of the range is occupied, the population is tentatively suspected to fall within the range 35,000 - 100,000 mature individuals.

Trend justification: The species's quality of habitat is declining as a result of fires and coal exploration (Machado et al. 2018). A projection of the impact of climate change on the species's range predicted that the area of the species's range would undergo a reduction of 80-90% by 2045-2060 (Marini et al. 2009). The population size is therefore suspected to be declining.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Brazil	extant	native	yes

Country/Territory	IBA Name
Brazil	Parque Estadual do Morro do Chapéu
Brazil	Parque Nacional da Chapada Diamantina
Brazil	Sento Sé / Campo Formoso

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Shrubland	Subtropical/Tropical Dry	major	resident
Shrubland	Subtropical/Tropical High Altitude	major	resident
Altitude	750 - 2050 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Indirect ecosystem effects, Ecosystem conversion
Energy production & mining	Mining & quarrying	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Human intrusions & disturbance	Recreational activities	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Negligible declines		Low Impact: 5
		Stresses Species disturbance
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Hooded Visorbearer Augastes lumachella. Downloaded from https://datazone.birdlife.org/species/factsheet/hooded-visorbearer-augastes-lumachella on 22/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 22/12/2024.