Cettia cetti 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Passeriformes Scotocercidae

Scientific Name: Cettia cetti (Temminck, 1820)
Regional Assessments:
Common Name(s):
English Cetti's Warbler
Taxonomic Source(s): Cramp, S. and Simmons, K.E.L. (eds). 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2017
Date Assessed: 2016-10-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Ashpole, J, Butchart, S., 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 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 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:
Afghanistan; Albania; Algeria; Armenia; Azerbaijan; Belgium; Bosnia and Herzegovina; Bulgaria; China; Croatia; Cyprus; France; Georgia; Germany; Greece; Hungary; Iran, Islamic Republic of; Iraq; Israel; Italy; Jordan; Kazakhstan; Kuwait; Kyrgyzstan; Lebanon; Macedonia, the former Yugoslav Republic of; Malta; Montenegro; Morocco; Netherlands; Pakistan; Portugal; Romania; Russian Federation (Central Asian Russia, European Russia); Serbia; Slovenia; Spain; Switzerland; Syrian Arab Republic; Tajikistan; Tunisia; Turkey; Turkmenistan; United Kingdom; Uzbekistan
Egypt; India; Ireland; Luxembourg; Poland; Sweden; United Arab Emirates
Additional data:
Continuing decline in area of occupancy (AOO):Unknown
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:18000000
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
Upper elevation limit (metres):1450
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:In Europe, the breeding population is estimated to number 2,020,000-3,190,000 pairs, which equates to 4,050,000-6,380,000 mature individuals (BirdLife International 2015). Europe forms c.35% of the global range, so a very preliminary estimate of the global population size is 11,570,000-18,230,000 mature individuals, although further validation of this estimate is needed.

Trend Justification:  The population is suspected to be increasing due to a northward range expansion in the west of its range. In Europe, trends between 1989 and 2013 show that populations have undergone a moderate increase (EBCC 2015).
Current Population Trend:Increasing
Additional data:
Number of mature individuals:10000000-19999999Continuing 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 favours swampy lowland areas with thick cover of reeds and sparse bushes (rarely in uniform reedbeds standing in water), willows (Salix), and brambles (Rubus) or blackthorn (Prunus spinosa). It is also found in overgrown ditches and streams with thick tangles of cover, areas of damp meadows, tall grass stands, hedgerows and overgrown orchards. In non-breeding areas, occurs in variably wet or dry scrub of plains, foothills, valley bottoms, bramble patches, overgrown orchards, and dense cover near water, marshes, swamps and reeds (Clement 2006). Breeding occurs mainly from mid-April to July/August. It lays two to four eggs. The nest is a large untidy cup of leaves, dry grass, plant fibres, feathers, animal hair and reed mace (Typha). It can be sited up to two metres from the ground in a thick tangle of vegetation, among the twigs or thin branches of a bush or stems of reeds or nettles (Urtica) (Clement 2006). It feeds mainly on insects but also takes other invertebrates. The species varies from sedentary to migratory in different parts of its range (Snow and Perrins 1998).
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): Particularly in the north-west of its range, it is susceptible to severe cold winters (Hagemeijer and Blair 1997, Robinson et al. 2007).

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

No conservation measures are currently needed for this species within Europe.

Amended [top]

Amended reason: Map revised.

Citation: BirdLife International. 2017. Cettia cetti (amended version of 2016 assessment). The IUCN Red List of Threatened Species 2017: e.T22714445A111073290. . Downloaded on 21 June 2018.
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