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-{{about||the North American red squirrel|American red squirrel|the 1993 Spanish film|The Red Squirrel{{!}}''The Red Squirrel''}}
-{{Use dmy dates|date=July 2013}}
-{{Taxobox
-| name = Red squirrel
-| status = LC
-| status_system = iucn3.1
-| trend = unknown
-| status_ref = <ref name=iucn>{{cite journal | authors = Shar, S.; Lkhagvasuren, D.; Bertolino, S.; Henttonen, H.; Kryštufek, B.; Meinig, H. | title = ''Sciurus vulgaris'' | journal = [[IUCN Red List of Threatened Species]] | volume = 2008 | page = e.T20025A9135609 | publisher = [[IUCN]] | year = 2008 | url = http://dx.doi.org/10.2305/IUCN.UK.2008.RLTS.T20025A9135609.en | accessdate = 27 October 2015}}</ref>
-| image = Squirrel posing.jpg
-| image_width=300px
-| regnum = [[Animal]]ia
-| phylum = [[Chordate|Chordata]]
-| classis = [[Mammal]]ia
-| ordo = [[Rodent]]ia
-| familia = [[Sciuridae]]
-| genus = ''[[Sciurus]]''
-| subgenus = ''[[Sciurus#Species|Sciurus]]''
-| species = '''''S. vulgaris'''''
-| binomial = ''Sciurus vulgaris''
-| binomial_authority = [[Carl Linnaeus|Linnaeus]], [[10th edition of Systema Naturae|1758]]
-| subdivision_ranks = [[Subspecies]]<ref name="Thorington">{{MSW3 Sciuridae | id = 12400219 | page=764 | heading = ''Sciurus (Sciurus) vulgaris''}}</ref>
-| subdivision = 23 recognized, see [[Red squirrel#Taxonomy|text]]''
-| range_map = Sciurus vulgaris habitat.png
-| range_map_width = 300px
-| range_map_caption = Red squirrel range
-}}
-The '''red squirrel''' or '''Eurasian red squirrel''' (''Sciurus vulgaris'') is a [[species]] of [[tree squirrel]] in the [[genus]] ''[[Sciurus]]'' common throughout [[Eurasia]]. The red squirrel is an [[Arboreal locomotion|arboreal]], [[omnivore|omnivorous]] [[rodent]].
-In Great Britain, Italy and Ireland, numbers have decreased drastically in recent years. This decline is associated with the introduction by humans of the [[eastern gray squirrel|eastern grey squirrel]] (''Sciurus carolinensis'') from North America,<ref>[http://www.bbc.co.uk/nature/life/Red_Squirrel Red squirrel]. Bbc.co.uk. Retrieved on 2013-09-30.</ref><ref>[http://www.scottishsquirrels.org.uk/squirrel-facts/ Two different squirrels]. Scottishsquirrels.org.uk. Retrieved on 2013-09-30.</ref> In addition, habitat loss is a factor.<ref>"Fight to save Red Squirrel impeded by lack of funds": article by Graham Tibbetts on page 17  of issue 47,381, ''[[Daily Telegraph]]'' (5 October 2007)</ref> Due to this, without conservation the species could disappear from those shores within a generation.
-Unlike some other rodents, the Eurasian red squirrel is not a direct threat to humans. <ref>{{cite web|url=http://www.netgoblins.com/ekorre/fakta.html|title=Fakta - ekorren|work=netgoblins.com}}</ref>
-==Description==
-[[Image:Eurasian Red Squirrel.jpg|thumb|left|upright|The underparts are generally white/cream in colour]]
-[[Image:MattiParkkonen Orava.jpg|thumb|right|Profile of the Eurasian red squirrel in grey winter coat]]
-The red squirrel has a typical head-and-body length of 19 to 23&nbsp;cm (7.5 to 9 in), a tail length of 15 to 20&nbsp;cm (5.9 to 7.9 in), and a mass of 250 to 340 g (8.8 to 12 oz). Males and females are the same size, which means that the species is not [[sexual dimorphism|sexually dimorphic]]. (The red squirrel is somewhat smaller than the eastern grey squirrel which has a head-and-body length of 25 to 30&nbsp;cm (9.5 to 12 in) and weighs between 400 and 800&nbsp;g (14 oz to 1.8&nbsp;lb).)
-It is thought{{by who|date=May 2015}} that the long tail helps the squirrel to balance and steer when jumping from tree to tree and running along branches, and may keep the animal warm during sleep.{{citation needed|date=April 2013}}
-The red squirrel, like most tree squirrels, has sharp, curved [[claw]]s to enable it to climb and descend broad tree trunks, thin branches and even house walls. Its strong hind legs enable it to leap gaps between trees. The red squirrel also has the ability to swim.<ref>[http://rsst.org.uk/about-us/red-squirrel-facts/ Red squirrel facts]. RSST. Retrieved on 2013-09-30.</ref>
-The coat of the red squirrel varies in colour with time of year and location. There are several different coat colour morphs ranging from black to red. Red coats are most common in Great Britain; in other parts of Europe and Asia [[polymorphism (biology)|different coat colours]] co-exist within populations, much like hair colour in some human populations. The underside of the squirrel is always white-cream in colour. The red squirrel sheds its coat twice a year, switching from a thinner summer coat to a thicker, darker winter coat with noticeably larger ear-tufts (a prominent distinguishing feature of this species) between August and November. A lighter, redder overall coat colour, along with the ear-tufts (in adults) and smaller size, distinguish the Eurasian red squirrel from the American eastern grey squirrel.<ref>[http://www.scottishsquirrels.org.uk/docs/008__030__general__SSRS_TwoSquirrels_Factsheet_FINAL__1257509087.pdf Two different squirrels: the facts]. scottishsquirrels.org.uk. Retrieved on 25 July 2013.</ref><ref>[http://www.rspb.org.uk/community/wildlife/f/13609/t/9105.aspx RSPB facts]. Rspb.org.uk (24 January 2010). Retrieved on 2013-07-25.</ref><ref>[http://www.cornwallredsquirrels.co.uk/page6.htm Cornwall Red Squirrels website]. Cornwallredsquirrels.co.uk. Retrieved on 25 July 2013.</ref>
-==Distribution==
-[[File:Red Squirrel Urals.jpg|thumb|Red squirrel in the Urals region, grey winter coat]]
-Red squirrels occupy [[boreal ecosystem | boreal]], [[coniferous woodland | coniferous woods]] in northern Europe and Siberia, preferring [[Scots pine]], [[Norway spruce]] and [[Siberian pine]]. In western and southern Europe they are found in broad-leaved woods where the mixture of tree and shrub species provides a better year round source of food. In most of the British Isles and in Italy, broad-leaved woodlands are now less suitable due to the better competitive feeding strategy of introduced grey squirrels.<ref>[http://www.forestry.gov.uk/fr/INFD-8C8BHC Forest Research – UK Red Squirrel Group – Red squirrel facts]. Forestry.gov.uk. Retrieved on 25 July 2013.</ref>
-==Reproduction==
-[[File:Die vergleichende Osteologie (1821) Sciurus vulgaris.jpg|thumb|left|Skeleton of a squirrel]]
-Mating can occur in late winter during February and March and in summer between June and July. Up to two litters a year per female are possible. Each litter usually contains three or four young although as many as six may be born. [[Gestation]] is about 38 to 39 days. The young are looked after by the mother alone and are born helpless, blind and deaf and weigh between 10 and 15&nbsp;g. Their body is covered by hair at 21 days, their eyes and ears open after three to four weeks, and they develop all their teeth by 42 days. Juvenile red squirrels can eat solids around 40 days following birth and from that point can leave the nest on their own to find food; however, they still suckle from their mother until [[weaning]] occurs at 8 to 10 weeks.
-During mating, males detect females that are in [[œstrus]] by an odor that they produce, and although there is no courtship, the male will chase the female for up to an hour prior to mating. Usually multiple males will chase a single female until the dominant male, usually the largest in the group, mates with the female. Males and females will mate multiple times with many partners. Females must reach a minimum body mass before they enter œstrus, and heavy females on average produce more young. If food is scarce breeding may be delayed. Typically a female will produce her first litter in her second year.
-[[Image:JJM SquirrelBaby 01.jpg|thumb|right|A two-week-old red squirrel]]
-==Life expectancy==
-Red squirrels that survive their first winter have a life expectancy of 3 years. Individuals may reach 7 years of age, and 10 in captivity. Survival is positively related to availability of autumn–winter tree seeds; on average, 75–85% of juveniles die during their first winter, and mortality is approximately 50% for winters following the first.<ref name="gurnell1983">{{cite journal|author=Gurnell, J. |title=Squirrel numbers and the abundance of tree seeds|doi=10.1111/j.1365-2907.1983.tb00274.x|year=1983|journal=Mammal Review|volume=13|issue=2–4|page=133}}</ref>
-==Ecology and behaviour==
-[[File:Red squirrels with walnuts.webm|thumb|left|A red squirrel takes and loses a walnut]]
-The red squirrel is found in both [[coniferous forest]] and [[Temperate hardwood forest|temperate broadleaf]] woodlands. The squirrel makes a [[drey]] (nest) out of twigs in a branch-fork, forming a domed structure about 25 to 30&nbsp;cm in diameter.  This is lined with [[moss]], leaves, grass and [[bark]]. Tree hollows and [[woodpecker]] holes  are also used. The red squirrel is a solitary animal and is shy and reluctant to share food with others. However, outside the [[breeding season]] and particularly in winter, several red squirrels may share a drey to keep warm. Social organization is based on dominance hierarchies within and between sexes; although males are not necessarily dominant to females, the dominant animals tend to be larger and older than subordinate animals, and dominant males tend to have larger home ranges than subordinate males or females.<ref name="wauters1992a">{{cite journal|author=Wauters, L., Swinnen, C. and Dhondt, A. A. |title=Activity budget and foraging behaviour or red squirrels (''Sciurus vulgaris'') in coniferous and deciduous habitats|doi=10.1111/j.1469-7998.1992.tb04345.x|year=1992|journal=Journal of Zoology|volume=227|page=71}}</ref>
-The red squirrel eats:
-* mostly the [[seed]]s of trees, neatly stripping conifer cones to get at the seeds within.{{Citation needed|date=April 2010}} [[Fungi]]
-* nuts (especially [[hazelnut]]s but also beech and chestnuts)
-* [[berry|berries]]
-* young shoots<ref name=r1>[http://www.forestry.gov.uk/forestry/Redsquirrel Forestry Commission – Red Squirrels]. Forestry.gov.uk. Retrieved on 25 July 2013.</ref>
-Although more rarely, red squirrels may also eat bird eggs or nestlings. A Swedish study shows that out of 600 stomach contents of red squirrels examined, only 4 contained remnants of birds or eggs.<ref>The University of Lund, Lunduniversity.lu.se. Retrieved on 15 October 2015.</ref><ref>'Ask a Biologist at The University of Lund' [http://www1.biol.lu.se/fraga/?p=1103]. Retrieved on 15 October 2015.</ref> Thus, red squirrels may occasionally exhibit opportunistic omnivory, similarly to other rodents.
-Excess food is put into caches, either buried or in nooks or holes in trees, and eaten when food is scarce.  Although the red squirrel remembers where it created caches at a better-than-chance level, its [[spatial memory]] is substantially less accurate and durable than that of grey squirrel;<ref name="macdonald1997">{{cite journal|author=Macdonald, I. M. V. |title=Field experiments on duration and precision of grey and red squirrel spatial memory|doi=10.1006/anbe.1996.0528|year=1997|journal=Animal Behaviour|volume=54|issue=4|pages=879–91|pmid=9344441}}</ref> it therefore will often have to search for them when in need, and many caches are never found again.
-Between 60% and 80% of its active period may be spent foraging and feeding.<ref name="wauters1992b">{{cite journal|author=Wauters, L.A. and Dhondt, A.A. |title=Spacing behaviour of red squirrels, ''Sciurus vulgaris'': variation between habitats and the sexes|doi=10.1016/S0003-3472(05)80225-8|year=1992|journal=Animal Behaviour|volume=43|issue=2|page=297}}</ref> The active period for the red squirrel is in [[crepuscular|the morning and in the late afternoon and evening]]. It often rests in its nest in the middle of the day, avoiding the heat and the high visibility to [[bird of prey|birds of prey]] that are dangers during these hours. During the winter, this mid-day rest is often much more brief, or absent entirely, although harsh weather may cause the animal to stay in its nest for days at a time.
-No territories are claimed between the red squirrels, and the feeding areas of individuals overlap considerably.
-==Enemies and threats==
-[[File:Sciurus vulgaris in snow - Helsinki, Finland.jpg|thumb|A red squirrel in snow in [[Helsinki]]]]
-Arboreal predators include small mammals such as the [[pine marten]], wild [[cat]]s, and the [[stoat]], which preys on nestlings; birds, including [[owl]]s and raptors such as the [[northern goshawk|goshawk]] and [[buzzard]]s, may also take the red squirrel. The [[red fox]], cats and dogs can prey upon the red squirrel when it is on the ground. Humans influence the population size and mortality of the red squirrel by destroying or altering habitats, by causing road casualties, and by introducing non-native populations of the North American eastern grey squirrels.
-The eastern grey squirrel and the red squirrel are not directly antagonistic, and violent conflict between these species is not a factor in the decline in red squirrel populations.<ref>{{cite web|url=http://rsst.org.uk/about-us/red-and-grey-squirrels/|title=Red and grey squirrels|work=Rsst}}</ref> However, the eastern grey squirrel appears to be able to decrease the red squirrel population due to several reasons:
-*The eastern grey squirrel carries a disease, the [[squirrel parapoxvirus]], that does not appear to affect their health but will often kill the red squirrel. It was revealed in 2008 that the numbers of red squirrels at [[Formby]] had declined by 80% as a result of this disease,<ref>Country File, BBC, 28.89.2008</ref> even though the population is now recovering.<ref>[http://www.nationaltrust.org.uk/article-1355813511001/ Formby's red squirrel population recovering], National trust, 25 November 2013</ref>
-*The eastern grey squirrel can digest [[acorn]]s, while the red squirrel cannot.
-*When the red squirrel is put under pressure, it will not breed as often.
-In UK as a whole, due to the above circumstances, the population has today diminished to 160,000 red squirrels or less (120,000 of these reside in Scotland).<ref>http://scottishsquirrels.org.uk/ Scottish Wildlife Trust, Scottish Natural Heritage, Forestry Commission Scotland, Scottish Land and Estates, RSPB and the Red Squirrel Survival Trust. Retrieved 21 October 2015.</ref> Outside the UK and Ireland, the impact of competition from the eastern grey squirrel has been observed in [[Piedmont]], Italy, where two pairs escaped from captivity in 1948. A significant drop in red squirrel populations in the area has been observed since 1970, and it is feared that the eastern grey squirrel may expand into the rest of Europe.
-==Conservation and strategies==
-===Background===
-[[Image:Redsquirrel eating 2012.jpg|thumb|The Red squirrel, with its winter coat, in England]]
-[[File:Eichhörnchen Düsseldorf Hofgarten Crisco edit.jpg|thumb|right|In Germany]]
-The red squirrel is protected in most of Europe, as it is listed in Appendix III of the [[Convention on the Conservation of European Wildlife and Natural Habitats|Bern Convention]]; it is listed as being of [[least concern]] on the [[IUCN Red List]]. However, in some areas it is abundant and is hunted for its fur.
-Although not thought to be under any threat worldwide, the red squirrel has nevertheless drastically reduced in number in the United Kingdom; especially after the grey squirrels were introduced from North America in the 1870s. Fewer than 140,000 individuals are thought to be left in 2013;<ref name=r1/> approximately 85% of which are in Scotland, with the [[Isle of Wight]] being the largest haven in England. A local charity, the Wight Squirrel Project,<ref>[http://www.wightsquirrels.co.uk/ The Wight Squirrel Project – Home]. Wightsquirrels.co.uk. Retrieved on 25 July 2013.</ref>  supports red squirrel conservation on the island, and islanders are actively recommended to report any invasive greys. The population decrease in Britain is often ascribed to the introduction of the eastern grey squirrel from North America,<ref>{{cite news|url=http://news.bbc.co.uk/1/hi/england/7839653.stm|title=Black squirrels set to dominate|publisher=BBC News|date=20 January 2009|accessdate=26 April 2009}}</ref> but the loss and fragmentation of its native woodland habitat has also played a role.
-===Conservation===
-In January 1998, eradication of the non-native North American grey squirrel begun from the North Wales Island of [[Anglesey]]. This facilitated the natural recovery of the small remnant red squirrel population. It was followed by the successful reintroduction of the red squirrel into the pine stands of [[Newborough Forest]].<ref>[http://www.redsquirrels.info Red squirrel conservation, squirrel ecology and grey squirrel management]. Redsquirrels.info. Retrieved on 25 July 2013.</ref> Subsequent reintroductions into broadleaved woodland followed and today the island has the single largest red squirrel population in Wales. [[Brownsea Island]] in [[Poole Harbour]] is also populated exclusively by red rather than grey squirrels (approximately 200 individuals).
-[[Image:Sciurus vulgaris Turku cemetery.jpg|thumb|In Finland]]
-[[Image:Sciurus vulgaris bearn 2001.jpg|thumb|Red squirrel with a brown coat]]
-Mainland initiatives in southern Scotland and the north of England also rely upon grey squirrel control as the cornerstone of red squirrel conservation strategy. A local programme known as the "North East Scotland Biodiversity Partnership", an element of the national [[Biodiversity Action Plan]] was established in 1996.<ref>{{cite web|url=http://www.hutton.ac.uk/news/new-dawn-biodiversity-partnership-working|title=A new dawn for biodiversity partnership working|work=hutton.ac.uk}}</ref> This programme is administered by the [[Grampian]] Squirrel Society, with an aim of protecting the red squirrel; the programme centres on the [[Banchory]] and [[Cults, Aberdeen|Cults]] areas. In 2008, the [[Scottish Wildlife Trust]] announced a four-year project which commenced in the spring of 2009 called "Saving Scotland's Red Squirrels".<ref>"A new era for Scotland's red squirrels?" in ''Scottish Wildlife'' (November 2008) No. 66. Edinburgh.</ref>
-Other notable projects include red squirrel projects in the Greenfield Forest, including the buffer zones of [[Mallerstang]], [[Garsdale]] and Widdale;<ref>[http://www.daelnet.co.uk/countrynews/country_news_29122008_2.cfm "Greenfield Forest declared England’s newest Red Squirrel Reserve"] daelnet.co.uk. Retrieved 24 January 2011</ref> the Northumberland [[Kielder Forest]] Project; and within the National Trust reserve in [[Formby]]. These projects were originally part of the Save Our Squirrels campaign that aimed to protect red squirrels in the north of England, but now form part of a five-year Government-led partnership conservation project called ‘Red Squirrels Northern England’ <ref>[http://www.rsne.org.uk/ Red Squirrels Northern England]. Rsne.org.uk. Retrieved on 25 July 2013.</ref> to undertake grey squirrel control in areas important for red squirrels.
-[[File:Wiewiorka pospolita.jpg|thumb|right|Red squirrel in Poland]]
-Research undertaken in 2007 in the UK credits the [[pine marten]] with reducing the population of the invasive eastern grey squirrel. Where the range of the expanding pine marten population meets that of the eastern grey squirrel, the population of these squirrels retreats. It is theorised that because the grey squirrel spends more time on the ground than the red, that they are far more likely to come in contact with this predator.<ref>Watson, Jeremy (30 December 2007) [http://www.scotsman.com/news/environment/tufty-s-saviour-to-the-rescue-1-1430388 "Tufty's saviour to the rescue"]. ''Scotland on Sunday''. Edinburgh.</ref>
-During October 2012, four male and one female red squirrel, on permanent loan from the [[British Wildlife Centre]], were transported to [[Tresco, Isles of Scilly|Tresco]] in the [[Isles of Scilly]] by helicopter, and released into Abbey Wood, near the [[Tresco Abbey Gardens|Abbey Gardens]]. Only two survived and a further twenty were transported and released in October, 2013.<ref>[http://www.scillytoday.com/2013/06/18/trescos-red-squirrel-colony-to-be-restocked/ Tresco’s Red Squirrel Colony To Be Restocked]. Scilly Today (18 June 2013). Retrieved on 2013-07-25.</ref> Although the red squirrel is not indigenous to the Isles of Scilly, those who supported this work intend to use Tresco as a ″safe haven″ for the endangered mammal as the islands are free of predators such as [[Red fox|foxes]], and of the [[Squirrel parapoxvirus|squirrel pox]] carrying grey squirrel.<ref>{{cite news|last=Mumford|first=Clive|title=Squirrels to be released in 2013|url=http://www.thisiscornwall.co.uk/Squirrels-set-released-2013/story-17210756-detail/story.html|accessdate=14 November 2012|newspaper=The Cornishman|date=1 November 2012|page=16}}</ref><ref>{{cite web|title=RNAS Culdrose helicopter flies red squirrels to Tresco|url=http://www.bbc.co.uk/news/uk-england-cornwall-24164247|publisher=BBC|accessdate=5 November 2013}}</ref>
-==Historical, cultural and financial significance==
-[[File:Squirrel Eating.jpg|thumb|"Squirrel" illustration from "British Mammals" by A. Thorburn, 1920]]
-[[Squirrel Nutkin]] is a character, always illustrated as a red squirrel, in English author [[Beatrix Potter]]'s books for children.
-'Ekorren' (The Red Squirrel) is a well known and appreciated children's song in Sweden. Text and lyrics by Alice Tegnér in 1892.
-In [[Norse mythology]], [[Ratatoskr]] is a red squirrel who runs up and down with messages in the world tree, [[Yggdrasil]], and spreads gossip. In particular, he carried messages between the unnamed eagle at the top of Yggdrasill and the wyrm [[Níðhöggr]] beneath its roots.
-The red squirrel used to be widely hunted for its pelt. In Finland squirrel pelts were used as currency in ancient times, before the introduction of coinage.<ref>[http://www.holappa.info/html/verot/oravannahat.html Verot 1500–1600 luvulla:Oravannahat]. Holappa.info. Retrieved on 25 July 2013.</ref> The expression "squirrel pelt" is still widely understood there to be a reference to money.
-The [[Rareware]] character [[Conker the Squirrel]] is a red squirrel.
-==Taxonomy==
-[[File:Red squirrel subspecies.png|thumb|Various red squirrel subspecies; A) ''S. v. vulgaris'' from Sweden, B) ''S. v. fuscoater'' from Germany, C) ''S. v. infuscatus'' from central Spain]]
-There have been over 40 described [[subspecies]] of the red squirrel, but the taxonomic status of some of these is uncertain. A study published in 1971 recognises 16 subspecies and has served as a basis for subsequent taxonomic work.<ref name="sidorowicz1971">{{cite journal|author=Sidorowicz, J.|year=1971|title= Problems of subspecific taxonomy of squirrel (''Sciurus vulgaris'' L.) in Palaearctic|journal=Zoologischer Anzeiger|volume=187|pages=123–142}}</ref><ref name="lurz2005">{{cite journal|author=Lurz, P.W.W.; Gurnell, John and Magris, Louise |year=2005|title= ''Sciurus vulgaris''|journal=Mammalian Species|volume= 769|pages=1–10|url=http://www.science.smith.edu/msi/pdf/769_Sciurus_vulgaris.pdf|doi=10.1644/1545-1410(2005)769[0001:SV]2.0.CO;2}}</ref> At present, there are 23 recognized subspecies.<ref name="Thorington"/>
-*''S. v. alpinus''. Desmarest, 1822. (Synonyms: ''S. v. baeticus'', ''hoffmanni'', ''infuscatus'', ''italicus'', ''meridionalis'', ''numantius'', ''segurae'' or ''silanus''.)
-*''S. v. altaicus''. Serebrennikov, 1928.
-*''S. v. anadyrensis''. [[Sergej Ognew|Ognev]], 1929.
-*''S. v. arcticus''. [[Édouard Louis Trouessart|Trouessart]], 1906. (Synonym: ''S. v. jacutensis''.)
-*''S. v. balcanicus''. Heinrich, 1936. (Synonyms: ''S. v. istrandjae'' or ''rhodopensis''.)
-*''S. v. chiliensis''. [[George Brettingham Sowerby III|Sowerby]], 1921.
-*''S. v. cinerea''. [[Johann Hermann|Hermann]], 1804.
-*''S. v. dulkeiti''. [[Sergej Ognew|Ognev]], 1929.
-*''S. v. exalbidus''. [[Peter Simon Pallas|Pallas]], 1778. (Synonyms: ''S. v. argenteus'' or ''kalbinensis''.)
-*''S. v. fedjushini''. [[Sergej Ognew|Ognev]], 1935.
-*''S. v. formosovi''. [[Sergej Ognew|Ognev]], 1935.
-*''S. v. fuscoater''. Altum, 1876. (Synonyms: ''S. v. brunnea'', ''gotthardi'', ''graeca'', ''nigrescens'', ''russus'' or ''rutilans''.)
-*''S. v. fusconigricans''. Dvigubsky, 1804
-*''S. v. leucourus''. Kerr, 1792.
-*''S. v. lilaeus''. Miller, 1907. (Synonyms: ''S. v. ameliae'' or ''croaticus''.)
-*''S. v. mantchuricus''. [[Oldfield Thomas|Thomas]], 1909. (Synonyms: ''S. v. coreae'' or ''coreanus''.)
-*''S. v. martensi''. [[Paul Matschie|Matschie]], 1901. (Synonym: ''S. v. jenissejensis''.)
-*''S. v. ognevi''. Migulin, 1928. (Synonyms: ''S. v. bashkiricus'', ''golzmajeri'' or ''uralensis''.)
-*''S. v. orientis''. [[Oldfield Thomas|Thomas]], 1906.
-*''S. v. rupestris''. [[Oldfield Thomas|Thomas]], 1907
-*''S. v. ukrainicus''. Migulin, 1928. (Synonym: ''S. v. kessleri''.)
-*''S. v. varius''. [[Johann Friedrich Gmelin|Gmelin]], 1789.
-*''S. v. vulgaris''. [[Linnaeus]], 1758.<ref name="Linn1758">{{cite book|last=Linnaeus |first=Carolus |authorlink=Carl Linnaeus |title=Systema naturae per regna tria naturae :secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. |publisher=Holmiae (Laurentii Salvii) |year=1758 |url=http://www.biodiversitylibrary.org/bibliography/542 |accessdate=8 March 2010 |language=Latin |edition=10th}}</ref> (Synonyms: ''S. v. albonotatus'', ''albus'', ''carpathicus'', ''europaeus'', ''niger'', ''rufus'' or ''typicus''.)
-''S. vulgaris'' is classed as a "prohibited new organism" under New Zealand's [[Hazardous Substances and New Organisms Act 1996]] preventing it from being imported into the country.<ref>{{cite web|url=http://legislation.govt.nz/act/public/1996/0030/latest/DLM386556.html#DLM386556|title=Hazardous Substances and New Organisms Act 2003 – Schedule 2 Prohibited new organisms|publisher=New Zealand Government|accessdate=26 January 2012}}</ref>
-{{-}}
-== References ==
-{{Reflist|35em}}
-== External links ==
-{{Portal|Mammals}}
-{{Commons and category|Sciurus vulgaris|Sciurus vulgaris}}
-{{Wikispecies|Sciurus vulgaris}}
-*[http://www.arkive.org/species/ARK/mammals/Sciurus_vulgaris/ ARKive]: photographs and videos
-*[http://scottishsquirrels.org.uk A partnership to save the red squirrel, between the Scottish Wildlife Trust, et al]
-*[http://www.wildlifeonline.me.uk/squirrels.html WildlifeOnline: Natural History of Tree Squirrels]
-*[http://web.archive.org/web/20101226033234/http://news.scotsman.com/nature/Red-squirrels-make-a-comeback.6078169.jp Red squirrels make a comeback as culling of grey rivals brings results]
-*[http://dx.doi.org/10.7589/0090-3558-48.2.454 Acute Fatal Toxoplasmosis in Three Eurasian Red Squirrels]
-*{{YouTube|mgHO4O1rHuk|Close up video of a red squirrel}}
-*{{YouTube|TyznzQeZCM4|A very close up video of a red squirrel eating}}
-*{{YouTube|wsHDIeMpFOo|A high quality video of a red squirrel feeding in the UK}}
-{{S. Sciurinae1 nav}}
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