|Scientific Name:||Hydrobates leucorhous|
|Species Authority:||(Vieillot, 1818)|
Hydrobates leucorhoa leucorhoa Christidis and Boles (2008)
Oceanodroma leucorhoa (Vieillot, 1818)
|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.|
|Taxonomic Notes:||Hydrobates leucorhous (del Hoyo and Collar 2014) was previously placed in the genus Oceanodroma as O. leucorhoa.|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer(s):||Butchart, S. & Symes, A.|
|Facilitator/Compiler(s):||Butchart, S., Calvert, R. & Ekstrom, J.|
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 stable, 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:||
|Range Description:||Leach's Storm Petrel has an extensive global range. Breeding colonies are confined to the northern hemisphere, from the South Kuril Islands (Japan) round to Baja California (Mexico) including the Aleutian Islands, Alaska (USA) and Canada in the Pacific, and in the north-east North America, Iceland, northern United Kingdom and Norway in the Atlantic. Northern populations migration south into the tropics in winter, reaching the equator in the Pacific and as far south as south Brazil and South Africa in the Atlantic (del Hoyo et al. 1992).|
Native:Angola (Angola); Antigua and Barbuda; Argentina; Bahamas; Barbados; Bermuda; Bonaire, Sint Eustatius and Saba (Saba, Sint Eustatius); Brazil; Canada; Cape Verde; China; Costa Rica; Cuba; Curaçao; Denmark; Dominica; Dominican Republic; Ecuador (Galápagos - Present - Origin Uncertain); Faroe Islands; France; French Guiana; French Polynesia; Greenland; Guadeloupe; Guam; Guatemala; Guyana; Haiti; Honduras; Iceland; Ireland; Israel; Japan; Kiribati; Liberia; Marshall Islands; Martinique; Mauritania; Mexico; Montserrat; Morocco; Namibia; Netherlands; Northern Mariana Islands; Norway; Palestinian Territory, Occupied; Portugal; Puerto Rico; Russian Federation; Saint Helena, Ascension and Tristan da Cunha; Saint Kitts and Nevis; Saint Lucia; Saint Martin (French part); Saint Pierre and Miquelon; Saint Vincent and the Grenadines; Senegal; Seychelles; Sint Maarten (Dutch part); South Africa; Spain (Canary Is.); Suriname; Trinidad and Tobago; Turks and Caicos Islands; United Kingdom; United States; United States Minor Outlying Islands; Venezuela, Bolivarian Republic of; Virgin Islands, British; Virgin Islands, U.S.
Vagrant:Algeria; Antarctica; Australia; Austria; Belgium; Egypt; Estonia; Finland; Gambia; Germany; Ghana; Gibraltar; Italy; Jamaica; Kenya; Latvia; Lebanon; Luxembourg; Maldives; Malta; New Zealand; Poland; Sierra Leone; Sudan; Sweden; Switzerland; United Arab Emirates; Uruguay
Present - origin uncertain:Anguilla; Belize; Benin; Cameroon; Cayman Islands; Colombia; Congo; Congo, The Democratic Republic of the; Côte d'Ivoire; El Salvador; Equatorial Guinea; French Southern Territories; Gabon; Grenada; Guinea; Guinea-Bissau; Micronesia, Federated States of ; Nauru; Nicaragua; Nigeria; Panama; Peru; Sao Tomé and Principe; Togo; Tuvalu; Western Sahara
|Continuing decline in area of occupancy (AOO):||Unknown|
|Extreme fluctuations in area of occupancy (AOO):||No|
|Estimated extent of occurrence (EOO) - km2:||1340000|
|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:||Brooke (2004) estimated the global population to number > c.20,000,000 individuals, while national population sizes have been estimated at c.100-10,000 breeding pairs and c.50-1,000 individuals on migration in Japan and c.10,000-100,000 breeding pairs and c.1,000-10,000 individuals on migration in Russia (Brazil 2009).
Trend Justification: There is no reason to suppose the overall population is undergoing rapid change at present (Brooke 2004).
|Current Population Trend:||Stable|
|Habitat and Ecology:||This species is marine and pelagic, often occuring in areas of convergence or upwelling or over continental shelves, rarely coming near land except at colonies. Its diet comprises mainly of small fish, squid, planktonic crustaceans and offal which is catches on the wing by dipping, skimming or snatching from the surface.It sometimes follows marine mammals feeding on left overs or faeces. Its breeding season is variable depending on locality, forming colonies on offshore islands on high ground or slopes, usually among rocks but also in soft soil between trees (del Hoyo et al. 1992)|
|Continuing decline in area, extent and/or quality of habitat:||Unknown|
|Generation Length (years):||13|
|Movement patterns:||Full Migrant|
|Congregatory:||Congregatory (and dispersive)|
|Citation:||BirdLife International. 2012. Hydrobates leucorhous. The IUCN Red List of Threatened Species 2012: e.T22698511A40244984. . Downloaded on 01 December 2015.|
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