Actophilornis albinucha 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Charadriiformes Jacanidae

Scientific Name: Actophilornis albinucha
Species Authority: (Geoffroy Saint-Hilaire, 1832)
Common Name(s):
English Madagascar Jacana
French Jacana à nuque blanche
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: 2015
Date Assessed: 2012-05-03
Assessor(s): BirdLife International
Reviewer(s): Butchart, S.
Contributor(s): Morris, P., Réné De Roland, L. & Young, G.
Facilitator/Compiler(s): Butchart, S., Ekstrom, J., Malpas, L., Taylor, J. & Symes, A.
This species has been uplisted to Near Threatened because it is suspected to be undergoing a moderately rapid population decline owing to the loss and degradation of its wetland habitats and continued hunting pressure and almost qualifies for a threatened listing under criteria A2cd+3cd+4cd.
Previously published Red List assessments:
2012 Near Threatened (NT)
2009 Least Concern (LC)
2008 Least Concern (LC)
2004 Least Concern (LC)
2000 Lower Risk/least concern (LR/lc)
1994 Lower Risk/least concern (LR/lc)
1988 Lower Risk/least concern (LR/lc)

Geographic Range [top]

Range Description: Actophilornis albinucha is endemic to Madagascar. It has been described as common or abundant in western and northern Madagascar, but is rare in the east of the island (Langrand 1990, Morris and Hawkins 1998). It has been noted that the species is becoming less frequently observed in suitable habitat (P. Morris in litt. 2010, L.-A. Réné de Roland in litt. 2012), probably indicating that a decline has occurred. This apparent decline is suspected to be on-going, on the basis of continued habitat loss and modification, as well as hunting pressure (del Hoyo et al. 1996, P. Morris in litt. 2010, L.-A. Réné de Roland in litt. 2012, G. Young in litt. 2012).
Countries occurrence:
Continuing decline in area of occupancy (AOO): Yes
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 113000
Continuing decline in extent of occurrence (EOO): Unknown
Extreme fluctuations in extent of occurrence (EOO): No
Continuing decline in number of locations: Yes
Extreme fluctuations in the number of locations: No
Upper elevation limit (metres): 750
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population is estimated to number 1,000-10,000 individuals, roughly equating to 670-6,700 mature individuals.

Trend Justification:  The population appears to have become increasing rare in suitable habitat (P. Morris in litt. 2010, L.-A. Réné de Roland in litt. 2012), and is suspected to be in moderately rapid decline owing to on-going habitat destruction and degradation, as well as hunting pressure (del Hoyo et al. 1996, P. Morris in litt. 2010, L.-A. Réné de Roland in litt. 2012, G. Young in litt. 2012).
Current Population Trend: Decreasing
Additional data:
Number of mature individuals: 670-6700 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: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Behaviour The migratory movements and breeding habits of this species are little known, although it appears to make minor local movements in response to water conditions and may breed throughout the year (del Hoyo et al. 1996). The species is usually found alone or in pairs, more rarely in groups (one group recorded contained 75 individuals) (Langrand 1990). Habitat The species shows a preference for floating vegetation on shallow lake margins, in freshwater marshes, on ponds and on slow-flowing rivers, from sea-level to c.750 m (Langrand 1990, del Hoyo et al. 1996). Diet Its diet consists of adult and larval insects and other invertebrates, as well as the seeds of aquatic plants (del Hoyo et al. 1996). Breeding site The nest is a floating heap of aquatic vegetation (del Hoyo et al. 1996).

Systems: Terrestrial; Freshwater
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 4.8
Movement patterns: Not a Migrant
Congregatory: Congregatory (and dispersive)

Threats [top]

Major Threat(s): The species is threatened by habitat loss and degradation, e.g. a decline in the population on Lake Aloatra has been attributed to siltation, agricultural development, drainage, over-fishing and illegal hunting (del Hoyo et al. 1996). In general, aquatic habitats in Madagascar are threatened by conversion to rice cultivation, which also results in a reduction in the extent of habitat fringed by water-lilies (Rabenandrasana and Sama 2006). However, the species can survive in some modified and disturbed habitats, such as flooded rice fields (G. Young in litt. 2012). This species, like all waterbirds in Madagascar, is hunted wherever possible (L.-A. Réné de Roland in litt. 2012, G. Young in litt. 2012).

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
No targeted conservation actions are known for this species, although it occurs in a number of protected areas, and will benefit from actions carried out for other aquatic bird species.

Conservation Actions Proposed
Carry out surveys to acquire a total population estimate and baseline estimates for certain sites. Conduct regular population monitoring at selected sites. Monitor rates of habitat loss and degradation across its range. Increase the area of suitable wetland habitat that receives effective protection. Conduct awareness-raising activities to help reduce habitat degradation.

Citation: BirdLife International. 2015. Actophilornis albinucha. The IUCN Red List of Threatened Species 2015: e.T22693532A66616758. . Downloaded on 26 November 2015.
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