|Scientific Name:||Aegithalos caudatus|
|Species Authority:||(Linnaeus, 1758)|
|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#.|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Facilitator/Compiler(s):||Butchart, S., Ekstrom, J. & Symes, A.|
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 fluctuating, 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:|
Native:Albania; Andorra; Armenia (Armenia); Austria; Azerbaijan; Belarus; Belgium; Bosnia and Herzegovina; Bulgaria; China; Croatia; Czech Republic; Denmark; Estonia; Finland; France; Georgia; Germany; Greece; Hungary; Iran, Islamic Republic of; Iraq; Ireland; Italy; Japan; Kazakhstan; Korea, Democratic People's Republic of; Korea, Republic of; Kyrgyzstan; Latvia; Liechtenstein; Lithuania; Luxembourg; Macedonia, the former Yugoslav Republic of; Moldova; Mongolia; Montenegro; Netherlands; Norway; Poland; Portugal; Romania; Russian Federation; Serbia (Serbia); Slovakia; Slovenia; Spain; Sweden; Switzerland; Syrian Arab Republic; Turkey; Turkmenistan; Ukraine; United Kingdom
Vagrant:Gibraltar; Morocco; Tunisia
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||In Europe, the breeding population is estimated to number 5,000,000-12,000,000 breeding pairs, equating to 15,000,000-36,000,000 individuals (BirdLife International 2004). Europe forms 25-49% of the global range, so a very preliminary estimate of the global population size is 30,600,000-144,000,000 individuals, although further validation of this estimate is needed. National population estimates include: c.10,000-100,000 breeding pairs in China; c.10,000-100,000 breeding pairs in Korea; c.10,000-100,000 breeding pairs in Japan and c.10,000-100,000 breeding pairs in Russia (Brazil 2009).|
Trend Justification: The population is suspected to be fluctuating owing to the effects of severe winters and recorded range expansions and regional declines in recent decades (Harrap and Quinn 1996). In Europe, trends since 1980 show that populations have undergone a moderate decline (p<0.01), based on provisional data for 21 countries from the Pan-European Common Bird Monitoring Scheme (EBCC/RSPB/BirdLife/Statistics Netherlands; P. Vorisek in litt. 2008).
|Current Population Trend:||Stable|
|Citation:||BirdLife International. 2015. Aegithalos caudatus. The IUCN Red List of Threatened Species 2015: e.T22712004A84952787.Downloaded on 04 December 2016.|
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