|Scientific Name:||Calidris ruficollis|
|Species Authority:||(Pallas, 1776)|
|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.|
|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 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:||
Native:Australia; Bangladesh; Brunei Darussalam; Cambodia; China; Christmas Island; Guam; Hong Kong; India; Indonesia; Japan; Korea, Democratic People's Republic of; Korea, Republic of; Lao People's Democratic Republic; Malaysia; Micronesia, Federated States of ; Mongolia; Myanmar; New Caledonia; New Zealand; Northern Mariana Islands; Palau; Papua New Guinea; Philippines; Russian Federation; Singapore; Solomon Islands; Sri Lanka; Taiwan, Province of China; Thailand; Timor-Leste; United States; Viet Nam
Vagrant:Belgium; Bermuda; Canada; Denmark; Fiji; Finland; France; Germany; Israel; Italy; Kazakhstan; Kenya; Marshall Islands; Mozambique; Netherlands; Norway; Peru; Seychelles; Somalia; South Africa; Sweden; United Arab Emirates; United Kingdom; Vanuatu
|Continuing decline in area of occupancy (AOO):||Unknown|
|Extreme fluctuations in area of occupancy (AOO):||No|
|Estimated extent of occurrence (EOO) - km2:||971000|
|Continuing decline in extent of occurrence (EOO):||Unknown|
|Extreme fluctuations in extent of occurrence (EOO):||No|
|Continuing decline in number of locations:||Unknown|
|Extreme fluctuations in the number of locations:||No|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The global population is estimated to number > c.320,000 individuals (Wetlands International, 2006), while national population estimates include: < c.10,000 individuals on migration and c.1,000-10,000 wintering individuals in China; > c.1,000 individuals on migration and > c.1,000 wintering individuals in Taiwan; > c.1,000 individuals on migration in Korea; < c.10,000 individuals on migration and c.50-10,000 wintering individuals in Japan and c.100,000-1 million breeding pairs and > c.10,000 individuals on migration in Russia (Brazil 2009).
Trend Justification: The overall population trend is uncertain, as some populations are decreasing, while others are increasing, stable or have unknown trends.
|Current Population Trend:||Unknown|
|Citation:||BirdLife International. 2012. Calidris ruficollis. The IUCN Red List of Threatened Species 2012: e.T22693383A38794700. http://dx.doi.org/10.2305/IUCN.UK.2012-1.RLTS.T22693383A38794700.en . Downloaded on 06 October 2015.|
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