|Scientific Name:||Plegadis chihi|
|Species Authority:||(Vieillot, 1817)|
|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, Barcelona, Spain and Cambridge, UK.|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer(s):||Butchart, S. & Symes, A.|
|Facilitator/Compiler(s):||Ekstrom, J., Butchart, S.|
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 appears to be increasing, 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 is extremely 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:|
Native:Argentina; Aruba; Bolivia, Plurinational States of; Brazil; Canada; Chile; Colombia; Costa Rica; El Salvador; Guatemala; Honduras; Mexico; Nicaragua; Paraguay; Peru; United States; Uruguay; Venezuela, Bolivarian Republic of
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The population is estimated to number 1,200,000 individuals.|
Trend Justification: The overall trend is increasing, although some populations may be stable (Wetlands International 2006). This species has undergone a large and statistically significant increase over the last 40 years in North America (4300% increase over 40 years, equating to a 157% increase per decade; data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007) Note, however, that these surveys cover less than 50% of the species's range in North America.
|Current Population Trend:||Increasing|
|Citation:||BirdLife International. 2016. Plegadis chihi. The IUCN Red List of Threatened Species 2016: e.T22697426A93613243.Downloaded on 28 March 2017.|
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