• 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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	B2ab(ii,iii,v); C2a(i)	B2ab(ii,iii,v); C2a(i)

Red List history

Year	Category	Criteria
2016	Endangered	B2ab(ii,iii,v); C2a(i)
2015	Endangered	B2ab(ii,iii,v); C2a(i)
2012	Near Threatened	B1ab(i,ii,iii,iv,v)
2008	Near Threatened	B1a+b(i,ii,iii,iv,v)
2004	Near Threatened
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	39,800 km2	medium
Severely fragmented?	yes	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1000-2499 mature individuals	unknown	estimated	2014
Population trend	decreasing	-	inferred	-
Generation length	4.2 years	-	-	-

Population justification: The global population is estimated at less than 2,500 individuals, with no more than 250 individuals in each subpopulation (ICMBio 2014).

Trend justification: The population is suspected to be declining owing to widespread deforestation which is thought to be severe in some areas, although it is noted that the species will accept altered habitats as long as forest patches or stands of trees remain.

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

Country/Territory	IBA Name
Brazil	Mata do Estado (Mata do Sirigi)
Brazil	Usina Cachoeira
Brazil	Guadalupe
Brazil	Brejo dos Cavalos
Brazil	Engenho Coimbra (Usina Serra Grande)
Brazil	Murici

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Plantations	suitable	resident
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Artificial/Terrestrial	Urban Areas	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Savanna	Dry	major	resident
Altitude	0 - 700 m	Occasional altitudinal limits

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	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion

Purpose	Primary form used	Life stage used	Source	Scale	Level	Timing
Pets/display animals, horticulture	-	-		international	non-trivial	recent

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Recommended citation
BirdLife International (2023) Species factsheet: Thalurania watertonii. Downloaded from http://datazone.birdlife.org/species/factsheet/long-tailed-woodnymph-thalurania-watertonii on 07/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 07/12/2023.