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Description |
Geographic Range [top]
Range Description:
Countries occurrence:
Native:
Albania; Algeria; Angola (Angola); Armenia (Armenia); Australia; Austria; Azerbaijan; Bahrain; Bangladesh; Belarus; Benin; Bosnia and Herzegovina; Botswana; Brunei Darussalam; Bulgaria; Burkina Faso; Burundi; Cambodia; Cameroon; Central African Republic; Chad; China; Congo; Congo, The Democratic Republic of the; Côte dIvoire; Croatia; Cyprus; Czech Republic; Denmark; Djibouti; Egypt; Equatorial Guinea; Eritrea; Estonia; Ethiopia; France; Gabon; Gambia; Georgia; Germany; Ghana; Greece; Guam; Guinea; Guinea-Bissau; Hong Kong; Hungary; India; Indonesia; Iran, Islamic Republic of; Iraq; Israel; Italy; Japan; Jordan; Kazakhstan; Kenya; Korea, Democratic Peoples Republic of; Korea, Republic of; Kuwait; Lao Peoples Democratic Republic; Latvia; Lebanon; Liberia; Libya; Lithuania; Macedonia, the former Yugoslav Republic of; Madagascar; Malawi; Malaysia; Maldives; Mali; Malta; Mauritania; Micronesia, Federated States of ; Moldova; Mongolia; Montenegro; Morocco; Mozambique; Myanmar; Namibia; Nepal; Netherlands; New Zealand; Niger; Nigeria; Northern Mariana Islands; Oman; Pakistan; Palau; Palestinian Territory, Occupied; Papua New Guinea; Philippines; Poland; Qatar; Romania; Russian Federation; Rwanda; Saudi Arabia; Senegal; Serbia (Serbia); Seychelles; Sierra Leone; Singapore; Slovakia; Slovenia; Somalia; South Africa; South Sudan; Spain; Sri Lanka; Sudan; Swaziland; Switzerland; Syrian Arab Republic; Taiwan, Province of China; Tajikistan; Tanzania, United Republic of; Thailand; Timor-Leste; Togo; Tunisia; Turkey; Turkmenistan; Uganda; Ukraine; United Arab Emirates; Uzbekistan; Viet Nam; Yemen; Zambia; Zimbabwe
Vagrant:
Afghanistan; Antigua and Barbuda; Bahamas; Barbados; Belgium; Canada; Cocos (Keeling) Islands; Dominica; Faroe Islands; Finland; Gibraltar; Guadeloupe; Iceland; Ireland; Lesotho; Luxembourg; Marshall Islands; Martinique; Montserrat; Nauru; Norway; Portugal; Puerto Rico; Réunion; Saint Kitts and Nevis; Saint Lucia; Saint Vincent and the Grenadines; Sao Tomé and Principe; Solomon Islands; Sweden; Turks and Caicos Islands; United Kingdom; United States (Georgia - Native); Virgin Islands, U.S.
Additional data:
? Continuing decline in area of occupancy (AOO): Unknown
? Extreme fluctuations in area of occupancy (AOO): No ? Estimated extent of occurrence (EOO) - km2: 27200000
? 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): 2000
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: The global population is estimated to number c.3,100,000-4,000,000 individuals (Wetlands International 2015). The European population is estimated at 66,600-173,000 pairs, which equates to 133,000-347,000 mature individuals (BirdLife International 2015).
Trend Justification: The overall population trend is stable, although some populations have unknown trends (Wetlands International 2015). In Europe the population size is estimated to be fluctuating (BirdLife International 2015).
Current Population Trend: Stable
Additional data:
? Continuing decline of mature individuals: Unknown
? Extreme fluctuations: No ? Population severely fragmented: No
? Continuing decline in subpopulations: Unknown
? Extreme fluctuations in subpopulations: No ? All individuals in one subpopulation: No
Habitat and Ecology [top]
Habitat and Ecology: Behaviour This species is strongly migratory (del Hoyo et al. 1996). It breeds from April to August in small colonies of between 3 and 100 pairs (mostly 20-40 pairs) that may contain other species (del Hoyo et al. 1996). Throughout the year the species feeds in flocks (Snow and Perrins 1998) and migrates and overwinters in large flocks (del Hoyo et al. 1996) of up to tens of thousands of individuals (Snow and Perrins 1998). Habitat Breeding The species breeds inland on freshwater lakes (del Hoyo et al. 1996, Snow and Perrins 1998), swampy standing water, rivers (Snow and Perrins 1998) and shallow naturally flooded grassland (Richards 1990, Snow and Perrins 1998) with areas of open water bordered by stands of reeds, sedge and other aquatic vegetation (Snow and Perrins 1998). It generally avoids fish-ponds, rice-fields and ornamental waters (Richards 1990) but may feed over wet fields, dry farmland and steppe grassland (del Hoyo et al. 1996). Non-breeding On passage and in winter the species frequents a variety of habitats from inland lakes to rocky coasts (del Hoyo et al. 1996), including rivers, flood-plains, lakes (Snow and Perrins 1998), impoundments, lagoons and mangrove swamps, also feeding over wet fields, dry farmland and steppe grassland (del Hoyo et al. 1996). Diet It diet consists predominantly of aquatic insects (especially Diptera, Odonata and Coleoptera) as well as adult and larval terrestrial insects, small fish and tadpoles (del Hoyo et al. 1996). Breeding site The nest is a shallow cup in a mound of aquatic vegetation usually placed over water 30-120 cm deep on floating mats of vegetation, or on dry shores or resting on the bottom in shallow water (del Hoyo et al. 1996). The species nests in single- or mixed-species colonies, neighbouring nests usually widely spaced (i.e. 10-30 m apart) but may be as close as 2.5 m (del Hoyo et al. 1996).
Systems: Terrestrial; Freshwater; Marine
Continuing decline in area, extent and/or quality of habitat: Unknown
Generation Length (years): 9.9
Movement patterns: Full Migrant
Congregatory: Congregatory (and dispersive)
Threats [top]
Major Threat(s): The main threats to this species within its European range have been identified as habitat destruction and water regulation in wetlands. In the west of its European range the reclamation of wetlands is causing declines and in Russia and the Ukraine dry breeding seasons and an increasing number of drainage schemes pose a threat (Hagemeijer and Blair 1997). In Poland it is threatened by recreational activities causing disturbance (Górski 2004). It is also susceptible to avian influenza so may be threatened by future outbreaks of the virus (Melville and Shortridge 2006).
Conservation Actions [top]
Conservation Actions: Conservation Actions Underway
The following information refers to the speciess European range only: Bern Convention Appendix II. There are currently no known conservation measures for this species.
Conservation Actions Proposed
The following information refers to the speciess European range only: This species would likely benefit from the protection and conservation of its preferred wetland habitats. Restrictions on access and exclusion zones would help prevent disturbance at key sites.
Citation: BirdLife International. 2016. Chlidonias leucopterus. The IUCN Red List of Threatened Species 2016: e.T22694782A86772583. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22694782A86772583.en. Downloaded on 22 March 2017.
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