NT
Bay-capped Wren-spinetail Spartonoica maluroides



Taxonomy

Taxonomic note

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
SACC. 2006. 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
2016 Near Threatened C1+2a(i)
2012 Near Threatened C1+2a(i)
2008 Near Threatened C1; C2a(i)
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Near Threatened
Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type Land-mass type - continent
Average mass 11 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,380,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
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 - - -
Largest subpopulations 100 - - -
Generation length (yrs) 3.8 - - -

Population justification: The global population size has not been quantified, but this species is described as 'fairly common' (Stotz et al. (1996).

Trend justification: A slow decline is suspected to be occurring, owing to on-going drainage and conversion of wetland habitats.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Argentina Bahía de Samborombón y Punta Rasa
Argentina Bajos Submeridionales
Argentina Bañado de Añatuya
Argentina Bañado La Estrella Este
Argentina Bañados de Figueroa
Argentina Bañados del Arroyo Chucul y Reserva Natural de Fauna Laguna La Felipa
Argentina Bañados del Río Saladillo
Argentina Bañados del Utis
Argentina Barrancas de Baradero
Argentina Concepción-Chavarría
Argentina Cuenca del Río Salado
Argentina Cuña boscosa de Santa Fe
Argentina Dorso Occidental Subhúmedo de Santa Fe
Argentina El Talar de Belén
Argentina Estancia La Leonor
Argentina Estancia Medaland
Argentina Estancia San Ignacio
Argentina Estero Tapenagá
Argentina Islas de Victoria
Argentina Laguna de Pradere
Argentina Laguna Melincué
Argentina Lagunas del suroeste y relictos del Caldenal
Argentina Lagunas Encadenadas del Oeste de la Provincia de Buenos Aires
Argentina Nandubaysal-El Potrero
Argentina Parque Costero del Sur
Argentina Parque Nacional Chaco
Argentina Parque Nacional Río Pilcomayo
Argentina Reserva Campos del Tuyú, Estancia El Palenque y Los Ingleses
Argentina Reserva de Biosfera Albufera de Mar Chiquita
Argentina Reserva de Uso Múltiple Bañados del Río Dulce y Laguna Mar Chiquita
Argentina Reserva Ecológica Costanera Sur
Argentina Reserva El Bagual
Argentina Reserva Natural de Uso Múltiple Isla Martín García
Argentina Reserva Natural Otamendi, Reserva Provincial Río Lujan y alrededores
Argentina Reserva Natural Punta Lara
Argentina Reserva Provincial de Usos Múltiples Federico Wildermuth
Argentina Reserva Provincial Laguna Salada Grande
Argentina Rincón del Socorro-Iberá
Argentina San Antonio Oeste
Argentina Sur de Ramallo
Argentina Valle del río Paraguay-Paraná
Argentina Valle Fluvial del Río Paraguay
Argentina Vuelta de Obligado
Brazil Banhado do Maçarico e Cordões Litorâneos Adjacentes
Brazil Banhado do Taim
Brazil Estuário da Laguna dos Patos
Brazil Parque Nacional da Lagoa do Peixe
Brazil Várzea do Canal São Gonçalo
Uruguay Castillos Lagoon
Uruguay José Ignacio Lagoon
Uruguay Penino Beach and Santa Lucía Wetlands

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) major non-breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) major breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Marshes/Pools major breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Marshes/Pools major non-breeding
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 Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines
Stresses
Indirect ecosystem effects, Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines
Stresses
Indirect ecosystem effects, Ecosystem degradation, Ecosystem conversion
Natural system modifications Dams & water management/use Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines
Stresses
Indirect ecosystem effects, Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2017) Species factsheet: Spartonoica maluroides. Downloaded from http://www.birdlife.org on 18/10/2017. Recommended citation for factsheets for more than one species: BirdLife International (2017) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/10/2017.