|Red List Category & Criteria:
||Butchart, S. & Symes, A.
||Ekstrom, J., Calvert, R., Butchart, S., Harding, M., Fisher, 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 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:|
- 2016 – Least Concern (LC)
- 2012 – Least Concern (LC)
- 2009 – Least Concern (LC)
- 2008 – Least Concern (LC)
- 2004 – Least Concern (LC)
- 2000 – Lower Risk/least concern (LR/lc)
- 1994 – Lower Risk/least concern (LR/lc)
- 1988 – Lower Risk/least concern (LR/lc)
|Range Description:||This species breeds in the northern USA and central-west Canada, migrates south through Central America and winters off the west coast southern Mexico, Central America and of South America, where it is particularly common from Ecuador to Chile1. |
Argentina; Aruba; Belize; Bolivia, Plurinational States of; Brazil; Canada; Chile; Colombia; Costa Rica; Ecuador; El Salvador; Falkland Islands (Malvinas); French Guiana; Guatemala; Honduras; Mexico; Nicaragua; Panama; Paraguay; Peru; Puerto Rico; United States; Venezuela, Bolivarian Republic of
Australia; Barbados; Belgium; Bermuda; Cuba; Dominican Republic; Faroe Islands; France; French Polynesia; Gambia; Germany; Guadeloupe; Haiti; Iceland; Ireland; Japan; Kiribati; Marshall Islands; Micronesia, Federated States of ; Morocco; Mozambique; Namibia; Netherlands; Norway; Portugal; Saint Helena, Ascension and Tristan da Cunha; Saint Pierre and Miquelon; Senegal; South Africa; South Georgia and the South Sandwich Islands; Spain; Sweden; Trinidad and Tobago; United Arab Emirates; United Kingdom; United States Minor Outlying Islands; Zambia
|♦ Continuing decline in area of occupancy (AOO):||Unknown|
|♦ Extreme fluctuations in area of occupancy (AOO):||No||♦ Estimated extent of occurrence (EOO) - km2:||2910000|
|♦ 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|
|♦ Upper elevation limit (metres):||2500|
|Range Map:||Click here to open the map viewer and explore range.|