Data Zone
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#.
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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | full migrant | Forest dependency | low |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 33,400,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 30,500,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | estimated | 2009 |
| Population trend | decreasing | - | suspected | - |
| Generation length | 6.6 years | - | - | - |
Trend justification: The overall population trend is decreasing, although some populations have unknown trends (Wetlands International 2006). This species has undergone a small or statistically insignificant decrease over the last 40 years in North America (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.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Anguilla (to UK) | extant | native | ||||
| Antigua and Barbuda | extant | native | ||||
| Argentina | extant | native | ||||
| Aruba (to Netherlands) | extant | native | ||||
| Bahamas | extant | native | ||||
| Barbados | extant | native | ||||
| Belize | extant | native | yes | |||
| Bermuda (to UK) | extant | native | yes | |||
| Bolivia | extant | native | ||||
| Bonaire, Sint Eustatius and Saba (to Netherlands) | extant | native | ||||
| Brazil | extant | native | ||||
| Canada | extant | native | ||||
| Cayman Islands (to UK) | extant | native | ||||
| Chile | extant | native | ||||
| Colombia | extant | native | ||||
| Costa Rica | extant | native | yes | |||
| Cuba | extant | native | ||||
| Dominica | extant | native | ||||
| Dominican Republic | extant | native | ||||
| Ecuador | extant | native | ||||
| El Salvador | extant | native | ||||
| French Guiana | extant | native | ||||
| Greenland (to Denmark) | extant | vagrant | ||||
| Grenada | extant | native | ||||
| Guadeloupe (to France) | extant | native | ||||
| Guatemala | extant | native | ||||
| Guyana | extant | native | ||||
| Haiti | extant | native | ||||
| Honduras | extant | native | ||||
| Jamaica | extant | native | yes | |||
| Martinique (to France) | extant | native | ||||
| Mexico | extant | native | ||||
| Montserrat (to UK) | extant | native | ||||
| Nicaragua | extant | native | ||||
| Panama | extant | native | ||||
| Paraguay | extant | native | ||||
| Peru | extant | native | ||||
| Portugal | extant | vagrant | ||||
| Puerto Rico (to USA) | extant | native | yes | |||
| Sint Maarten (to Netherlands) | extant | native | ||||
| South Africa | extant | vagrant | ||||
| St Barthelemy (to France) | extant | native | ||||
| St Kitts and Nevis | extant | native | ||||
| St Lucia | extant | native | ||||
| St Martin (to France) | extant | native | ||||
| St Pierre and Miquelon (to France) | extant | vagrant | yes | |||
| St Vincent and the Grenadines | extant | native | ||||
| Suriname | extant | native | ||||
| Trinidad and Tobago | extant | native | ||||
| Turks and Caicos Islands (to UK) | extant | native | ||||
| Uruguay | extant | vagrant | ||||
| USA | extant | native | yes | |||
| Venezuela | extant | native | ||||
| Virgin Islands (to UK) | extant | native | yes | |||
| Virgin Islands (to USA) | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Mexico | Sur de Quintana Roo |
| USA | Barataria Terrebonne |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | breeding |
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | non-breeding |
| Marine Intertidal | Salt Marshes (Emergent Grasses) | suitable | breeding |
| Marine Intertidal | Salt Marshes (Emergent Grasses) | suitable | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | non-breeding |
| Altitude | 0 - 3750 m | Occasional altitudinal limits |
| Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
|---|---|---|---|---|---|---|
| Pets/display animals, horticulture | - | - | international | non-trivial | recent |
Recommended citation
BirdLife International (2023) Species factsheet: Egretta caerulea. Downloaded from
http://datazone.birdlife.org/species/factsheet/little-blue-heron-egretta-caerulea on 04/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 04/12/2023.
