Neochen jubata 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Anseriformes Anatidae

Scientific Name: Neochen jubata
Species Authority: (Spix, 1825)
Common Name(s):
English Orinoco Goose
Neochen jubatus jubatus Collar and Andrew (1988)
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. Lynx Edicions BirdLife International.

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Taylor, J. & Butchart, S.
Contributor(s): Clay, R., Di Giácomo, S., Díaz, D., Hennessey, A., Hesse, C., Kriese, K., McNish, T., Pinheiro, R., Pracontal, N., Sharpe, C J, Tobias, J., Lebbin, D., Dornas, T., Torres, D. & Davenport, L.
Facilitator/Compiler(s): Benstead, P., Bird, J., Capper, D., Clay, R., Isherwood, I., Mahood, S., Pilgrim, J., Sharpe, C J, Symes, A.
This species is classified as Near Threatened because it is continuing to undergo a moderately rapid population reduction owing to hunting pressure and habitat loss. It is still locally common in certain areas and, with proper protection, would be much more abundant over its wide range.

Previously published Red List assessments:
2011 Near Threatened (NT)
2008 Near Threatened (NT)
2006 Near Threatened (NT)
2004 Near Threatened (NT)
2000 Lower Risk/near threatened (LR/nt)
1994 Lower Risk/near threatened (LR/nt)
1988 Near Threatened (NT)

Geographic Range [top]

Range Description: Neochen jubata remains relatively widespread in South America east of the Andes, from east Colombia and Venezuela (where taken together there are probably 5,000-10,000 individuals [T. McNish in litt. 2007]), Ecuador (previously thought to just be a vagrant (Ridgely et al. 1998), but a small population of 20-30 now known from the Rio Pastaza area), Guyana, Suriname (no recent records and may never have been more than a vagrant [K. Kreise in litt. 2004]), south through Amazonian Brazil (where there are thought to be 2,000-4,000 individuals in the Cantão and Bananal Island region alone [R. Pinheiro in litt. 2007]), extreme east Peru (relatively common [Clements in prep.]), Bolivia (perhaps a few thousand pairs [J. Tobias in litt. 2007]) and west Paraguay (two records, in 1990 and 1992 [Hayes 1995]) to extreme north-west Argentina (either very scarce there now or just a vagrant) (Carboneras 1992a),. Clear declines have been noted in Brazil, Colombia, Ecuador, Peru and Argentina (Callaghan in prep.), and although the population was once estimated at c.25,000-100,000 individuals (P. Canevari in litt. 1993) it is now more likely to be 10,000-25,000 (K. Kreise in litt. 2004). Its strongholds appear to be the extensive, sparsely inhabited area of lakes, marshland and seasonally flooded savannas in north Beni, Bolivia, where flocks of up to 250 were observed in the early 1980s (Scott and Carbonell 1986, Ridgely et al. 1998), the Isla Bananal, Brazil (C. Yamashita verbally 2000) and the Colombian and Venezuelan llanos. It is becoming increasing localised over much of its range and is now scarce, except in remote or protected areas (Carboneras 1992a).

Countries occurrence:
Bolivia, Plurinational States of; Brazil; Colombia; Ecuador; Guyana; Peru; Venezuela, Bolivarian Republic of
Argentina; Barbados; Jamaica; Paraguay; Suriname
Continuing decline in area of occupancy (AOO): Yes
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 7930000
Continuing decline in extent of occurrence (EOO): Unknown
Extreme fluctuations in extent of occurrence (EOO): No
Continuing decline in number of locations: Unknown
Extreme fluctuations in the number of locations: No
Upper elevation limit (metres): 2600
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The global population has been estimated to number 10,000-25,000 mature individuals based on the result of discussions on BirdLife's Globally Threatened Birds Forum.

Trend Justification:  The species is suspected to be declining at a slow to moderate rate, owing primarily to hunting pressure and probably the conversion of suitable habitat for agriculture in parts of its range (C. Sharpe in litt. 2010).

Current Population Trend: Decreasing
Additional data:
Number of mature individuals: 10000-25000 Continuing decline of mature individuals: Yes
Extreme fluctuations: No Population severely fragmented: No
Continuing decline in subpopulations: Unknown
Extreme fluctuations in subpopulations: No All individuals in one subpopulation: No

Habitat and Ecology [top]

Habitat and Ecology: It inhabits forest-covered banks of tropical rivers and damp clearings, wet savannas and muddy and sandy margins of large freshwater wetlands, from lowlands to 500 m (Carboneras 1992a), occasionally to 2,600 m (Hilty and Brown 1986).

Systems: Terrestrial; Freshwater
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 7.8
Movement patterns: Not a Migrant
Congregatory: Congregatory (and dispersive)

Threats [top]

Major Threat(s): The current decline is attributed to heavy and continuing hunting pressure (Carboneras 1992a); although availability of foraging habitat may limit numbers locally, the abundance of the species on certain private reserves where it is well protected indicate that hunting is the primary reason for its decline. In Venezuela, conversion of former private reserves for rice production may threaten previously well-protected populations of the species (C. J. Sharpe in litt. 2010).

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
It occurs in a number of private and public protected areas.

Conservation Actions Proposed
Continue to monitor population trends through regular, coordinated surveys. Monitor levels of hunting pressure. Conduct awareness campaigns to discourage hunting and regulate the number of birds taken. Protect significant areas of suitable forest and wetland habitat in a network of public and private reserves.

Citation: BirdLife International. 2012. Neochen jubata. The IUCN Red List of Threatened Species 2012: e.T22679987A37853336. . Downloaded on 24 November 2015.
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