Stictonetta naevosa

Scope: Global

Language: English

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Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
Animalia	Chordata	Aves	Anseriformes	Anatidae

Scientific Name:

Stictonetta naevosa (Gould, 1841)

Common Name(s):

English

–

Freckled Duck

Taxonomic Source(s):

Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.

Assessment Information [top]

Red List Category & Criteria:	Least Concern ver 3.1
Year Published:	2016
Date Assessed:	2016-10-01
Assessor(s):	BirdLife International
Reviewer(s):	Butchart, S. & Symes, A.
Facilitator/Compiler(s):	Harding, M., Ekstrom, J., Butchart, S.
Justification: Although this species may have a small range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be fluctuating, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size may be moderately small to large, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Previously published Red List assessments:	2012 – Least Concern (LC) Download assessment 2009 – Least Concern (LC) Download assessment 2008 – Least Concern (LC) Download assessment 2004 – Least Concern (LC) Download assessment 2000 – Lower Risk/least concern (LR/lc) Download assessment 1996 – Vulnerable (VU) Download assessment 1994 – Vulnerable (VU) Download assessment 1988 – Threatened (T) Download assessment

Geographic Range [top]

Range Description:

This species has been recorded from wetlands across southern Australia, with major concentrations in the Paroo-Warrego catchment (Currawinya Lakes), Eyre-Georgine-Mulligan catchment (Lake Torquinie) and possibly at Lake Galilee. Other inland sites where substantial numbers have been recorded include Cooper's Creek and Bulloo River catchments, the wetlands of the Barkly Tablelands, and Lake Gregory in the central-north of Western Australia. Outside this area, breeding has also been recorded within the rest of the Murray-Darling catchment, notably along the Lachlan River, and swamps within the Millicent Basin of South Australia and Victoria. During extensive inland droughts, permanent wetlands in several states can become important refuge areas.

Countries occurrence:

Native:

Australia

Additional data:

♦ Continuing decline in area of occupancy (AOO):	Unknown
♦ Extreme fluctuations in area of occupancy (AOO):	No	♦ Estimated extent of occurrence (EOO) - km2:	7540000
♦ 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

Range Map:

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Population [top]

Population:

The population is estimated to number 11,000-26,000 individuals, roughly equating to 7,300-17,000 mature individuals.

Trend Justification: The overall trend is suspected to be fluctuating (Wetlands International 2006).

Current Population Trend:

Stable

Additional data:

♦ Number of mature individuals:	7300-17000	♦ Continuing decline of mature individuals:	Unknown
♦ 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]

Threats [top]

Major Threat(s):	During times of inland drought, when found closer to the coast, birds are at risk of being misidentified as game species and shot by duck-hunters. Although no correlation between S. naevosa abundance and hunting effort has yet been identified. Plans to extract water from the Paroo River and Cooper's Creek, which would affect the flooding of critical inland swamps, constitute the greatest current threat. For the time being these plans have been shelved, however, should they proceed, it is estimated that the resulting reduction in habitat quality could cause a 20% population decline within three generations (c.15 years) (Garnett and Crowley 2000).

Major Threat(s):

During times of inland drought, when found closer to the coast, birds are at risk of being misidentified as game species and shot by duck-hunters. Although no correlation between S. naevosa abundance and hunting effort has yet been identified. Plans to extract water from the Paroo River and Cooper's Creek, which would affect the flooding of critical inland swamps, constitute the greatest current threat. For the time being these plans have been shelved, however, should they proceed, it is estimated that the resulting reduction in habitat quality could cause a 20% population decline within three generations (c.15 years) (Garnett and Crowley 2000).

Citation:	BirdLife International. 2016. Stictonetta naevosa. The IUCN Red List of Threatened Species 2016: e.T22679836A92831716. . Downloaded on 22 June 2018.
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