|Scientific Name:||Anser rossii (Cassin, 1861)|
Anser rossi rossi Stotz et al. (1996)
Anser rossii rossii Sibley and Monroe (1990, 1993)
Chen rossii Cassin, 1861
|Taxonomic Source(s):||AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.|
|Taxonomic Notes:||Anser rossii (del Hoyo and Collar 2014) was previously placed in the genus Chen.|
|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 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). 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:Canada; Mexico; United States
Vagrant:Netherlands; Russian Federation (Eastern Asian Russia)
|Range Map:||Click here to open the map viewer and explore range.|
|Current Population Trend:||Increasing|
Delany, S. and Scott, D. 2006. Waterbird population estimates. Wetlands International, Wageningen, The Netherlands.
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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-3. Available at: www.iucnredlist.org. (Accessed: 07 December 2016).
|Citation:||BirdLife International. 2016. Anser rossii. The IUCN Red List of Threatened Species 2016: e.T22679909A92834499.Downloaded on 20 February 2018.|