| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | AVES | CICONIIFORMES | THRESKIORNITHIDAE |
| Scientific Name: | Plegadis ridgwayi | |||
| Species Authority: | (Allen, 1876) | |||
Common Name/s:
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| Red List Category & Criteria: | Least Concern ver 3.1 | ||||||
| Year Published: | 2009 | ||||||
| Assessor/s: | BirdLife International | ||||||
| Reviewer/s: | Bird, J., Butchart, S. | ||||||
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Justification: This species has a very 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). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to 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. |
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| History: |
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| Range Description: | This species is found from the highlands of central Peru south to Bolivia, extreme northern Chile and north-west Argentina; it is also a non-breeding visitor to the Peruvian coast (del Hoyo et al. 1992). |
| Countries: |
Native:
Argentina; Bolivia; Chile; Peru
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| Range Map: | Click here to open the map viewer and explore range. |
| Population: | (Wetlands International 2006) |
| Habitat and Ecology: | It is found in swampy areas, rushy pastureland, mudflats, pools and streams, but also occurs in bunch-grass on hills, sometimes far from water (del Hoyo et al. 1992). |
| Systems: | Terrestrial; Freshwater |
| Citation: | BirdLife International 2009. Plegadis ridgwayi. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 24 May 2012. |
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