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Locustella naevia 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Passeriformes Locustellidae

Scientific Name: Locustella naevia
Species Authority: (Boddaert, 1783)
Regional Assessments:
Common Name(s):
English Common Grasshopper-warbler, Common Grasshopper Warbler, Common Grasshopper-Warbler, Grasshopper Warbler
French Locustelle tachetée
Taxonomic Source(s): del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-10-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Butchart, S., Ekstrom, J. & Symes, A.
Justification:
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:

Geographic Range [top]

Countries occurrence:
Native:
Afghanistan; Algeria; Armenia (Armenia); Austria; Azerbaijan; Belarus; Belgium; Bosnia and Herzegovina; Bulgaria; China; Croatia; Czech Republic; Denmark; Egypt; Estonia; Finland; France; Gambia; Georgia; Germany; Gibraltar; Greece; Guinea; Hungary; Iran, Islamic Republic of; Iraq; Ireland; Italy; Kazakhstan; Kuwait; Kyrgyzstan; Latvia; Libya; Liechtenstein; Lithuania; Luxembourg; Macedonia, the former Yugoslav Republic of; Mali; Mauritania; Moldova; Mongolia; Montenegro; Morocco; Netherlands; Norway; Oman; Poland; Portugal; Romania; Russian Federation; Saudi Arabia; Senegal; Serbia (Serbia); Slovakia; Slovenia; Spain; Sudan; Sweden; Switzerland; Syrian Arab Republic; Tajikistan; Tunisia; Turkey; Turkmenistan; Ukraine; United Arab Emirates; United Kingdom; Uzbekistan; Western Sahara
Vagrant:
Bahrain; Cape Verde; Ethiopia; Ghana; Iceland; Israel; Jordan; Kenya; Lebanon; Liberia; Malta; Nepal; Qatar; Sierra Leone; Sri Lanka; Yemen
Additional data:
Continuing decline in area of occupancy (AOO):Unknown
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:16900000
Continuing decline in extent of occurrence (EOO):UnknownExtreme 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 [top]

Population:In Europe, the breeding population is estimated to number 916,000-1,620,000 pairs, which equates to 1,830,000-3,240,000 mature individuals (BirdLife International 2015). Europe forms c.60% of the global range, so a very preliminary estimate of the global population size is 3,050,000-5,400,000 mature individuals, although further validation of this estimate is needed.

Trend Justification:  In Europe the overall trend from 1980-2013 was stable (EBCC 2015).
Current Population Trend:Stable
Additional data:
Number of mature individuals:3000000-5999999Continuing decline of mature individuals:Unknown
Extreme fluctuations:NoPopulation severely fragmented:No
Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:This species breeds at the edges of open woodland, in damp grazing land, in rank grasses, beds of nettle (Urtica) and brambles (Rubus fruticosus), scrubby sedge or reed marshes, at field edges and on upland moorland with willow (Salix) and birch (Betula) scrub. Egg-laying occurs from late April to mid-July in western Europe and clutches are typically five to six eggs. The nest is a thick cup of grass, stems and leaves built on a base of dried leaves and lined with finer material, such as feathers or hair. It is usually placed on or near the ground in thick vegetation, often in a grass tussock, bramble or sedge. The diet is mostly insects but spiders (Araneae) and some small molluscs are also taken. The species is a long distance migrant, passing through the Iberian Peninsula to winter in West Africa (Pearson and Kirwan 2015). The obscurior race that breeds in the Caucasus probably winters in North-East Africa. The straminea race that breeds in Central Asia winters in southern Asia with large numbers spending the non-breeding season in India although some also migrate to North-East Africa. The mongolica race is presumed to winter in southern Asia (Pearson and Kirwan 2015).
Systems:Terrestrial; Freshwater
Continuing decline in area, extent and/or quality of habitat:Unknown
Generation Length (years):3.7
Movement patterns:Full Migrant

Threats [top]

Major Threat(s): This species suffers from changing land-use practices, such as the intensification of agriculture, leading to the destruction of grassland (Hagemeijer and Blair 1997), wetland drainage and scrub clearance (Hagemeijer and Blair 1997, Pearson and Kirwan 2015). The species is also likely to be affected by future climate change (Huntley et al. 2008).

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
CMS Appendix II. Bern Convention Appendix II. There are currently no known conservation measures for this species within Europe.

Conservation Actions Proposed

This species would benefit from the preservation and promotion of low-intensity farming methods, which provide much suitable habitat (Hagemeijer and Blair 1997).

Citation: BirdLife International. 2016. Locustella naevia. The IUCN Red List of Threatened Species 2016: e.T22714657A87544995. . Downloaded on 30 May 2017.
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