Porphyrio porphyrio 

Scope: Global

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Gruiformes Rallidae

Scientific Name: Porphyrio porphyrio
Species Authority: (Linnaeus, 1758)
Regional Assessments:
Common Name(s):
English Purple Swamphen, Purple Swamp-Hen, Purple Gallinule
French Poule sultane
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.
Taxonomic Notes: Porphyrio porphyrio (Sibley and Monroe 1990, 1993) was split into P. porphyrio, P. indicus, P. madagascariensis, P. melanotus, P. poliocephalus and P. pulverulentus by Sangster et al. (1998), but this treatment is not adopted by the BirdLife Taxonomic Working Group. This is because although there is fair degree of variation between the continental forms of porphyrio (with the race pulverulentus the most distinct), a detailed analysis of character differences is required to determine levels of distinctiveness and variation. Pending such studies, porphyrio is retained as a single polytypic species.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2015
Date Assessed: 2012-05-03
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Ekstrom, J., Butchart, S., Malpas, L. & Ashpole, J
This species has an extremely large range, and hence does not 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 is not known, but the population is not believed to be decreasing sufficiently rapidly to approach the thresholds under the population trend criterion (>30% decline over ten years or three generations). The population size is very large, and hence does not 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:

Geographic Range [top]

Countries occurrence:
Afghanistan; Algeria; American Samoa (American Samoa); Angola (Angola); Australia; Azerbaijan; Bangladesh; Bhutan; Botswana; Burkina Faso; Burundi; Cambodia; Cameroon; Central African Republic; Chad; China; Congo, The Democratic Republic of the; Côte d'Ivoire; Croatia; Egypt; Ethiopia; Fiji; France; Gambia; Ghana; Guinea-Bissau; India; Indonesia; Iran, Islamic Republic of; Iraq; Italy; Kazakhstan; Kenya; Kuwait; Lao People's Democratic Republic; Lesotho; Liberia; Madagascar; Malawi; Malaysia; Mali; Mauritania; Morocco; Mozambique; Myanmar; Namibia; Nepal; New Caledonia; New Zealand; Niger; Nigeria; Niue; Pakistan; Palau; Papua New Guinea; Philippines; Portugal; Qatar; Russian Federation; Rwanda; Samoa; Senegal; Sierra Leone; Singapore; Solomon Islands; South Africa; Spain; Sri Lanka; Sudan; Swaziland; Syrian Arab Republic; Tanzania, United Republic of; Thailand; Timor-Leste; Togo; Tonga; Tunisia; Turkey; Turkmenistan; Uganda; United Arab Emirates; Vanuatu; Viet Nam; Zambia; Zimbabwe
Regionally extinct:
Austria; Belgium; Congo; Cyprus; Czech Republic; Germany; Greece; Hong Kong; Hungary; Israel; Jordan; Lebanon; Norway; Oman; Poland; Saint Helena, Ascension and Tristan da Cunha; Somalia
Additional data:
Continuing decline in area of occupancy (AOO):Unknown
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:18400000
Continuing decline in extent of occurrence (EOO):UnknownExtreme 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):2500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Current Population Trend:Unknown
Additional data:
Continuing decline of mature individuals:Unknown
Extreme fluctuations:NoPopulation severely fragmented:No
Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:Behaviour This species is sedentary, nomadic or partially migratory, with many populations making local seasonal movements in response to changing habitat conditions (del Hoyo et al. 1996) (e.g. the drying of marshes) (Taylor and van Perlo 1998). The timing of breeding varies geographically (in relation to peaks in local rainfall) (del Hoyo et al. 1996). It breeds in solitary territorial pairs (del Hoyo et al. 1996, Taylor and van Perlo 1998) (especially in pastures) (Taylor and van Perlo 1998) or in small communal groups containing several breeding males, breeding females and non-breeding helpers (del Hoyo et al. 1996, Taylor and van Perlo 1998) (especially in swamps) (Taylor and van Perlo 1998). When not breeding the species occurs in pairs, small groups of 12 or more individuals (Africa) or in larger congregations of 50 to several hundred individuals (India and New Zealand) (Taylor and van Perlo 1998). The species is mainly crepuscular and forages in the early-morning and late-evening (del Hoyo et al. 1996). Habitat It shows a preference for permanent, fresh or brackish, still or slow-flowing, sheltered, extensive wetlands (del Hoyo et al. 1996) with floating mats of water-lilies (Taylor and van Perlo 1998), tall, dense emergent vegetation (e.g. reeds Phragmites spp., Typha spp., sedge Carex spp., papyrus Cyperus spp. (del Hoyo et al. 1996, Taylor and van Perlo 1998), Scirpus spp. or Eleocharis spp. (Taylor and van Perlo 1998)), muddy or sandy shorelines and patches of shallow water (del Hoyo et al. 1996). It may however occur in saline, eutrophic or turbid wetlands, and may be found on small waters and seasonal or temporary wetlands (e.g. in Africa) (del Hoyo et al. 1996). Suitable habitats include ponds, lakes, dams, marshes, swamps, rivers, flood-plains, artesian wells, sewage farms (del Hoyo et al. 1996) and wet rice-fields (Taylor and van Perlo 1998). The species also extends into open habitats adjacent to wetlands including grasslands, agricultural land, parks, gardens, hedgerows and forest margins (del Hoyo et al. 1996). Diet Its diet consists predominantly of plant matter including shoots, leaves, roots, stems, flowers and seeds (e.g. of Typha spp., Scripus spp., rice, grasses, sedges, Rumex spp., Polygonum spp., water-lilies (del Hoyo et al. 1996), clover Trifolium spp., fern Salvonia repens, bananas, tapioca and yam Dioscorea spp. (Taylor and van Perlo 1998)). It also takes animal matter including molluscs, leeches, small crustaceans (del Hoyo et al. 1996) (Isopods, Amphipods and crabs) (Taylor and van Perlo 1998), adult and larval insects (del Hoyo et al. 1996) (Coleoptera, grasshoppers, Hemiptera, Diptera, Lepidoptera) (Taylor and van Perlo 1998), earthworms (Taylor and van Perlo 1998), spiders, fish and fish eggs, frogs and frog spawn, lizards (del Hoyo et al. 1996), water snakes Natrix maura (Taylor and van Perlo 1998), adult birds, bird eggs and nestlings, small rodents and carrion (del Hoyo et al. 1996). Breeding site The nest is a shallow cup in a large substantial structure of vegetation (del Hoyo et al. 1996) built on a platform of vegetation floating on or standing in shallow water (del Hoyo et al. 1996, Taylor and van Perlo 1998) 30-120 cm deep (Taylor and van Perlo 1998) and concealed in thick vegetation (del Hoyo et al. 1996). Management information There is evidence that the application of rabbit Oryctolagus cuniculus control measures may lead to an increase in nest predation on this species by rabbit-specialising predators (New Zealand) (Haselmayer and Jamieson 2001).
Systems:Terrestrial; Freshwater; Marine
Continuing decline in area, extent and/or quality of habitat:Unknown
Generation Length (years):5.9
Movement patterns:Not a Migrant
Congregatory:Congregatory (and dispersive)

Threats [top]

Major Threat(s): The main threats to this species are habitat loss through wetland drainage (del Hoyo et al. 1996, Taylor and van Perlo 1998), habitat degradation through the introduction of exotic species (e.g. coypu Myocastor coypus) (Taylor and van Perlo 1998), direct mortality from pesticide contamination (del Hoyo et al. 1996, Dowding et al. 1999) (e.g. brodifacoum, a pesticide applied aerially to exterminate rodents) (Dowding et al. 1999), poisoning by cyanobacterial toxins (from dense blooms of cyanobacteria in wetlands) (Alonso-Andicoberry et al. 2002) and hunting (del Hoyo et al. 1996). The species is also susceptible to avian influenza (Melville and Shortridge 2006, Gaidet et al. 2007) and avian botulism so may be threatened by future outbreaks of these diseases (Galvin et al. 1985).

Citation: BirdLife International. 2015. Porphyrio porphyrio. The IUCN Red List of Threatened Species 2015: e.T22692792A84631228. . Downloaded on 02 December 2016.
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