|Male (buck) and female (doe) roe deer|
|Range of roe deer|
Cervus capreolusLinnaeus, 1758
The roe deer (Capreolus capreolus), also known as the roe, western roe deer,   or European roe deer,  is a species of deer. The male of the species is sometimes referred to as a roebuck. The roe is a small deer, reddish and grey-brown, and well-adapted to cold environments. The species is widespread in Europe, from the Mediterranean to Scandinavia, from Scotland to the Caucasus, and east to northern Iran and Iraq.
The English roe is from the Old English rā or rāha, from Proto-Germanic *raihô, cognate with Old Norse rá, Old Saxon rēho, Middle Dutch and Dutch ree, Old High German rēh, rēho, rēia, German Reh. It is perhaps ultimately derived from a PIE root *rei-, meaning "streaked, spotted or striped".  
The word is attested on the 5th-century Caistor-by-Norwich astragalus -a roe deer talus bone, written in Elder Futhark as ᚱᚨᛇᚺᚨᚾ, transliterated as raïhan.  
In the English language, this deer was originally simply called a 'roe', but over time the word 'roe' has become a qualifier, and it is now usually called 'roe deer'. 
The Koiné Greek name πύγαργος, transliterated 'pygargos', mentioned in the Septuagint and the works of various writers such as Hesychius, Herodotus and later Pliny,  was originally thought to refer to this species (in many European translations of the Bible), although it is now more often believed to refer to the addax. It is derived from the words pyge 'buttocks' and argo 'white'.
The taxonomic name Capreolus is derived from capra or caprea, meaning 'billy goat', with the diminutive suffix -olus. The meaning of this word in Latin is not entirely clear: it may have meant 'ibex' or 'chamois'.  The roe was also known as capraginus or capruginus in Latin. 
Linnaeus first described the roe deer in the modern taxonomic system as Cervus capreolus in 1758.   The initially monotypic genus Capreolus was first proposed by John Edward Gray in 1821, although he did not provide a proper description for this taxon.  Gray was not actually the first to use the name Capreolus, it has been used by other authors before him. Nonetheless, his publication is seen as taxonomically acceptable.  He was generally ignored until the 20th century, most 19th-century works having continued to follow Linnaeus.
The name Capreolus capreolus is a tautonym. 
Roe deer populations gradually become somewhat larger as one moves further to the east, peaking in Kazakhstan, then becoming smaller again towards the Pacific Ocean.  The Soviet mammalogist Vladimir Sokolov had recognised this[ clarification needed ] as a separate species from 1985 already using electrophoretic chromatography to show differences in the fractional protein content of the body tissues,   the next year he showed that there were differences in the skull morphology,[ citation needed ] and a year after he used sonographs to demonstrate that the fawns, females and males made very different noises between species.  Alexander S. Graphodatsky looked at the karyotypy to present more evidence to recognise these Russian and Asian populations as a separate species, now renamed the eastern or Siberian roe deer (Capreolus pygargus), in his 1990 paper.   The taxa are differentiated by the B chromosomes found in C. pygargus, populations of this species gain more of these strange 'junk' chromosomes as one moves further east.
This new taxonomic interpretation (circumscription) was first followed in the American book Mammal Species of the World in 1993.  Populations of the roe deer from east of the Khopyor River and Don River to Korea are considered to be this species. 
The Integrated Taxonomic Information System, following the 2005 Mammal Species of the World, gives the following subspecies:  
This is just one (extreme) interpretation among a number of them. Two main specialists did not recognise these taxa and considered the species to be without subspecies in 2001.  The European Union's Fauna Europaea recognised in 2005 two subspecies, but besides the nominate form recognises the Spanish population as the endemic Capreolus capreolus gargantaMeunier, 1983.   In 2008 the IUCN recognised three infraspecific taxa: the nominate and the subspecies garganta and italicus. 
Roe deer are most closely related to the water deer, and, counter-intuitively, the three species in this group, called the Capreolini, are most closely related to moose and reindeer. 
Although roe deer were once classified as belonging to the Cervinae subfamily, they are now classified as part of the Odocoileinae, which includes the deer from the New World. 
Both the European roe deer and Siberian roe deer have seen their populations increase, both around the 1930s. In recent times, since the 1960s,  the two species have become sympatric where their distributions meet, and there is now a broad 'hybridization zone' running from the right side of the Volga River up to eastern Poland. It is extremely difficult for hunters to know which species they have bagged.  In line with Haldane's rule, female hybrids of the two taxa are fertile, while male hybrids are not.   Hybrids are much larger than normal and a Cesarean section was sometimes needed to birth the fawns, becoming larger than their mothers at the age of 4–5 months. F1 hybrid males may be sterile, but backcrosses with the females are possible. 
22% of the animals around Moscow carry the mtDNA of the European roe deer and 78% of the Siberian. In the Volgograd region, the European roe deer predominates.  In the Stavropol and Dnepropetrovsk regions of Ukraine, most of the deer are Siberian roe deer.   In northeastern Poland there is also evidence of introgression with the Siberian roe deer, which was likely introduced.  In some cases, such as around Moscow, former introductions of European stock is likely responsible. 
The roe deer is a relatively small deer, with a body length of 95–135 cm (3 ft 1 in – 4 ft 5 in) throughout its range, and a shoulder height of 63–67 cm (2 ft 1 in – 2 ft 2 in), and a weight of 15–35 kg (35–75 lb).  Populations from Urals and northern Kazakhstan are larger on average growing to 145 cm (4 ft 9 in) in length and 85 cm (2 ft 9 in) at shoulder height, with body weights of up to 60 kg (130 lb), with the populations becoming smaller again further east in the Transbaikal, Amur Oblast, and Primorsky Krai regions.[ citation needed ] In healthy populations, where population density is restricted by hunting or predators, bucks are slightly larger than does. Under other conditions, males can be similar in size to females, or slightly smaller. 
Bucks in good conditions develop antlers up to 20–25 cm (8–10 in) long with two or three, rarely even four, points. When the male's antlers begin to regrow, they are covered in a thin layer of velvet-like fur which disappears later on after the hair's blood supply is lost. Males may speed up the process by rubbing their antlers on trees, so that their antlers are hard and stiff for the duels during the mating season. Unlike most cervids, roe deer begin regrowing antlers almost immediately after they are shed.[ citation needed ]
Within Europe the roe deer occurs in most areas with the exception of northernmost Scandinavia, in Norway it occurs throughout the country with the exception of parts of northern Vestland and northernmost Nordland (north of Narvik),  and the islands of Iceland, Ireland and those of the Mediterranean Sea islands.  In the Mediterranean region, it is largely confined to mountainous areas, and is absent or rare at low altitudes.[ citation needed ]
There is an early Neolithic fossil record from Jordan. 
It is known that there are roe deer that live in the Red Forest near Chernobyl in Ukraine. 
In Flanders the roe deer was mostly confined to the hilly regions in the east, but like in neighbouring countries the population has expanded in recent times. A theory is that the expansion of maize cultivation, which are higher than traditional crops and afford more shelter, has aided their expansion to the west. 
In England and Wales, roe deer have experienced a substantial expansion in their range in the latter half of the 20th century and continuing into the 21st century.  This increase in population also appears to be affecting woodland ecosystems.  At the start of the 20th century, they were almost extirpated in Southern England, but since then have hugely expanded their range, mostly due to restrictions and decrease in hunting, increases in forests and reductions in arable farming, changes in agriculture (more winter cereal crops), a massive reduction in extensive livestock husbandry, and a general warming climate over the past 200 years. Furthermore, there are no large predators in Britain.   In some cases, roe deer have been introduced with human help. In 1884 roe deer were introduced from Württemberg in Germany into the Thetford Forest, and these spread to populate most of Norfolk, Suffolk, and substantial parts of Cambridgeshire. In southern England, they started their expansion in Sussex (possibly from enclosed stock in Petworth Park) and from there soon spread into Surrey, Berkshire, Wiltshire, Hampshire, and Dorset, and for the first half of the 20th century, most roe deer in Southern England were to be found in these counties. By the end of the 20th century, they had repopulated much of southern England and had expanded into Somerset, Devon, Cornwall, Oxfordshire, Gloucestershire, Warwickshire, Lincolnshire and South Yorkshire, and had even spread into Wales from the Ludlow area where an isolated population had appeared. At the same time, the surviving population in Scotland and the Lake District had pushed further south beyond Yorkshire and Lancashire and into Derbyshire and Humberside. 
In the 1970s, the species was still completely absent from Wales.  Roe deer can now be found in most of rural England except for southeast Kent and parts of Wales; anywhere in the UK mainland suitable for roe deer may have a population.  Not being a species that needs large areas of woodland to survive, urban roe deer are now a feature of several cities, notably Glasgow and Bristol, where in particular they favour cemeteries.[ citation needed ] In Wales, they are least common, but they are reasonably well established in Powys and Monmouthshire. 
Roe deer are found in northern Iran in the Caspian region: they occur in the Hyrcanian woodlands and agricultural lands of the Alborz Mountains (Golestan National Park, Jahan Nama Protected Area).  
Scottish roe deer were introduced to the Lissadell Estate in County Sligo in Ireland around 1870 by Sir Henry Gore-Booth.  The Lissadell roe deer were noted for their occasional abnormal antlers and survived in that general area for about 50 years before they died out. According to the National Biodiversity Data Centre, in 2014 there was a confirmed sighting of roe deer in County Armagh. There have been other, unconfirmed, sightings in County Wicklow.  
In the Netherlands, roe deer were extirpated from the entirety of the country except for two small areas around 1875. As new forests were planted in the country in the 20th century, the population began to expand rapidly. Although it was a protected species in 1950, the population is no longer considered threatened and it has lost legal protection. As of 2016 there are some 110,000 roe deer in the country. The population is primarily kept in check through the efforts of hunters. 
In 1991, a breeding colony of 27 roe deer coming from France, Hungary and Italy were brought in the Hai-Bar Carmel Reserve.  A small number of this roe deer population has been reintroduced to the Carmel Mountains from the Carmel Hai-Bar Nature Reserve, with the first deers being released in 1996.  24 to 29 animals had been released by 2006.  Some of the reintroduced animals were hand-reared and could be monitored by their responses to their keeper calls.  
This species can utilize a large number of habitats, including open agricultural areas and above the tree line, but a requisite factor is access to food and cover. It retreats to dense woodland, especially among conifers, or bramble scrub when it must rest, but it is very opportunistic and a hedgerow may be good enough. Roe deer in the southern Czech Republic live in almost completely open agricultural land.  The animal is more likely to be spotted in places with nearby forests to retreat to.  A pioneer species commonly associated with biotic communities at an early stage of succession, during the Neolithic period in Europe when farming humans began to colonise the continent from the Middle East, the roe deer was abundant, taking advantage of areas of forest or woodland cleared by Neolithic farmers. 
In order to mitigate risk, roe deer remain within refuge habitats (such as forests) during the day. They are likelier to venture into more open habitats at night and during crepuscular periods when there is less ambient activity.  It scrapes leaf litter off the ground to make a 'bed'. 
When alarmed it will bark a sound much like a dog and flash out its white rump patch. Rump patches differ between the sexes, with the white rump patches heart-shaped on females and kidney-shaped on males. Males may also bark or make a low grunting noise. Does (the females) make a high-pitched "pheep" whine to attract males during the rut (breeding season) in July and August. Initially the female goes looking for a mate and commonly lures the buck back into her territory before mating.[ citation needed ] The roe deer is territorial, and while the territories of a male and a female might overlap, other roe deer of the same sex are excluded unless they are the doe's offspring of that year. 
It feeds mainly on grass, leaves, berries, and young shoots. It particularly likes very young, tender grass with a high moisture content, i.e., grass that has received rain the day before. Roe deer will generally not venture into a field that has or has had livestock in it. 
The polygamous roe deer males clash over territory in early summer and mate in early autumn. During courtship, when the males chase the females, they often flatten the underbrush, leaving behind areas of the forest in the shape of a circle or figure eight called 'roe rings'. These tend to be 1-3m in diameter.  In 1956 it was speculated based on some field evidence that they choose where to form rings around plants with ergot mold, but this has not been substantiated further.  Males may also use their antlers to shovel around fallen foliage and soil as a way of attracting a mate. Roebucks enter rutting inappetence during the July and August breeding season. Females are monoestrous and after delayed implantation usually give birth the following June, after a 10-month gestation period, typically to two spotted fawns of opposite sexes. The fawns remain hidden in long grass from predators; they are suckled by their mother several times a day for around three months. Young female roe deer can begin to reproduce when they are around 6 months old.[ citation needed ] During the mating season, a male roe deer may mount the same doe several times over a duration of several hours. 
A roe deer can live up to 20 years, but it usually does not reach such an age. A normal life span in the wild is seven to eight years,  or 10 years. 
The roe deer population shows irruptive growth. It is extremely fecund and can double its population every year;  it shows a retarded reaction to population density with females continuing to have a similar fecundity at high population densities.
Population structure is modified by available nutrition, where populations are irrupting there are few animals over six years old. Where populations are stagnant or moribund, there is huge fawn mortality and a large part of the population is over seven years old. Mortality is highest in the first weeks after birth due to predation, or sometimes farm machinery; or in the first winter due to starvation or disease, with up to 90% mortality. 
It is a main prey of the Persian leopard ( Panthera pardus tulliana ) in the Alborz Mountains of Iran. 
The nematode Spiculopteragia asymmetrica infects this deer. 
Compared to the other large herbivores and omnivores in Iran, it is a poor disperser of plant seeds, despite consuming relatively more of them. 
The roe deer is a game animal of great economic value in Europe, providing large amounts of meat and earning millions of euros in sport hunting. In 1998, some 2,500,000 roe deer were shot per year in Western Europe.  In Germany alone, 700,000 were shot a year in the 1990s.  This is insufficient to slow down the population growth, and the roe deer continues to increase in number. 
It is the main source of venison in Europe.  In the 2000s, there was growing interest among consumers in alternative and organic food products such as game meat. Frozen roe venison should not be stored longer than 10 to 12 months at −25 °C to maintain a high quality. Storage time and quality can decrease if the bullet has travelled through the digestive tract and contaminated the meat. The meat, like most game meat, is darker in colour than most farmed meat. 
Roe deer are thought to have evolved from a species in the Eurasian genus Procapreolus, with some 10 species occurring from the Late Miocene to the Early Pleistocene, which moved from the east to Central Europe over the millennia, where Procapreolus cusanus (also classified as Capreolus cusanus) occurred.   It may not have evolved from C. cusanus, however, because the two extant species split from each other 1.375 and 2.75 Myr ago,  and the western species first appeared in Europe 600 thousand years ago. 
As of 2008 over 3,000 fossil specimens of this species have been recovered from Europe, which affords a good set of data to elucidate the prehistoric distribution. The distribution of the European species has fluctuated often since entering Europe. During the some periods during the last ice age it was present in central Europe, but during the Last Glacial Maximum it retreated to refugia in the Iberian Peninsula (two refugia here), southern France, Italy (likely two), the Balkans and the Carpathians. When the last Ice Age ended the species initially abruptly expanded north of the Alps to Germany during the Greenland Interstadial, 12.5–10.8 thousand years ago, but during the cooling of the Younger Dryas, 10.8–10 thousand years ago, it appears to have disappeared again from this region. It reappeared 9.7–9.5 thousand years ago, reaching northern central Europe. The modern population in this area appears to have recolonised it from the Carpathians and/or further east, but not the Balkans or other refugia. This is opposite to the red deer, which recolonised Europe from Iberia. There has been much admixture of these populations where they meet, also possibly due to human intervention in some cases. 
It is thought that during the Middle Ages the two species of roe deer were kept apart due to hunting pressure and an abundance of predators; the different species may have met in the period just before that, and yet, during the Ice Age they were also kept apart. 
Populations are increasing throughout Europe;    it is considered a species of 'least concern'. 
In the Hebrew Bible Deuteronomy 14:5, the יַחְמ֑וּר, yahmur, derived from 'to be red', is listed as the third species of animal that may be eaten. In most Bibles this word has usually been translated as 'roe deer', and it still means as much in Arabic (أحمر, pronounced 'ahmar) -it was still said to be a common species in the Mount Carmel area in the 19th century. The King James Bible translated the word as 'fallow deer', and in other English Bible translations the word has been translated as a number of different species.      When Modern Hebrew was reconstructed to serve as the language of the future Israel in late Ottoman and British Mandatory Palestine, the King James Bible interpretation was chosen, despite the fallow deer being fallow, not red.
Bambi, the titular character of the book Bambi, A Life in the Woods and its sequel Bambi's Children was originally a roe deer. When the story was adapted to the animated film Bambi by Walt Disney Pictures, the main character was changed to a white-tailed deer. 
Albino roe deer were exceedingly rare in history, and they were regarded as national treasures or sacred animals in ancient times in China. 
The moose or elk is a member of the New World deer subfamily and is the only species in the genus Alces. It is the largest and heaviest extant species in the deer family. Most adult male moose have distinctive broad, palmate antlers; most other members of the deer family have antlers with a dendritic ("twig-like") configuration. Moose typically inhabit boreal forests and temperate broadleaf and mixed forests of the Northern Hemisphere in temperate to subarctic climates. Hunting and other human activities have caused a reduction in the size of the moose's range over time. It has been reintroduced to some of its former habitats. Currently, most moose occur in Canada, Alaska, New England, New York State, Fennoscandia, the Baltic states, Poland, Kazakhstan, and Russia.
Ungulates are members of the diverse clade Ungulata which primarily consists of large mammals with hooves. Living ungulates are divided into two orders: the odd-toed ungulates (Perissodactyla) including horses, rhinoceroses, and tapirs; and even-toed ungulates (Artiodactyla) such as cattle, pigs, giraffes, camels, sheep, deer, and hippopotamuses. Cetaceans such as whales, dolphins, and porpoises are also classified as even-toed ungulates, although they do not have hooves. Most terrestrial ungulates use the hoofed tips of their toes to support their body weight while standing or moving. Two other orders of ungulates, Notoungulata, and Litopterna, native to South America, became extinct at the end of the Pleistocene, around 12,000 years ago.
Deer or true deer are hoofed ruminant mammals forming the family Cervidae. The two main groups of deer are the Cervinae, including muntjac, elk (wapiti), red deer, and fallow deer; and the Capreolinae, including reindeer (caribou), white-tailed deer, roe deer, and moose. Male deer of all species, as well as female reindeer, grow and shed new antlers each year. In this, they differ from permanently horned antelope, which are part of a different family (Bovidae) within the same order of even-toed ungulates (Artiodactyla).
Antlers are extensions of an animal's skull found in members of the Cervidae (deer) family. Antlers are a single structure composed of bone, cartilage, fibrous tissue, skin, nerves, and blood vessels. They are generally found only on males, with the exception of reindeer/caribou. Antlers are shed and regrown each year and function primarily as objects of sexual attraction and as weapons.
The reindeer or caribou is a species of deer with circumpolar distribution, native to Arctic, subarctic, tundra, boreal, and mountainous regions of Northern Europe, Siberia, and North America. This includes both sedentary and migratory populations. It is the only representative of the genus Rangifer. Herd size varies greatly in different geographic regions. More recent studies suggest the splitting of reindeer and caribou into six distinct species over their range.
The Père David's deer, also known as the milu or elaphure, is a species of deer native to the subtropical river valleys of China. It grazes mainly on grass and aquatic plants. It is the only extant member of the genus Elaphurus. Some experts suggest demoting Elaphurus to a subgenus of Cervus. Based on genetic comparisons, Père David's deer is closely related to Eld's deer.
The European fallow deer, also known as the common fallow deer or simply fallow deer, is a species of ruminant mammal belonging to the family Cervidae. It is historically native to Turkey and possibly the Italian Peninsula, Balkan Peninsula, and the island of Rhodes in Europe. Prehistorically native to and introduced into a larger portion of Europe, it has also been introduced to other regions in the world.
Voles are small rodents that are relatives of lemmings and hamsters, but with a stouter body; a longer, hairy tail; a slightly rounder head; smaller eyes and ears; and differently formed molars. They are sometimes known as meadow mice or field mice in North America.
The red deer is one of the largest deer species. A male red deer is called a stag or hart, and a female is called a hind. The red deer inhabits most of Europe, the Caucasus Mountains region, Anatolia, Iran, and parts of western Asia. It also inhabits the Atlas Mountains of Northern Africa; its early ancestors are thought to have crossed over to Morocco, then to Algeria, Libya and Tunisia via the Strait of Gibraltar, becoming the only species of true deer (Cervidae) to inhabit Africa. Red deer have been introduced to other areas, including Australia, New Zealand, the United States, Canada, Peru, Uruguay, Chile and Argentina. In many parts of the world, the meat (venison) from red deer is used as a food source.
The water deer is a small deer species native to China and Korea. Its prominent tusks, similar to those of musk deer, have led to both subspecies being colloquially named vampire deer in English-speaking areas to which they have been imported. It was first described to the Western world by Robert Swinhoe in 1870.
Capreolus is a genus of deer, the roe deer.
The Siberian roe deer, eastern roe deer, or Asian roe deer, is a species of roe deer found in northeastern Asia. In addition to Siberia and Mongolia, it is found in Kazakhstan, the Tian Shan Mountains of Kyrgyzstan, eastern Tibet, the Korean Peninsula, and northern China.
Cervus is a genus of deer that primarily are native to Eurasia, although one species occurs in northern Africa and another in North America. In addition to the species presently placed in this genus, it has included a whole range of other species now commonly placed in other genera. Additionally, the species-level taxonomy is in a state of flux.
The elk, or wapiti, is one of the largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. The word "elk" originally referred to the European variety of the moose, Alces alces, but was transferred to Cervus canadensis by North American colonists. The name "wapiti", derived from a Shawnee and Cree word meaning "white rump", is also used for C. canadensis.
Lucanus capreolus, the reddish-brown stag beetle, is a beetle of the family Lucanidae. The specific name capreolus is derived from Latin, meaning "roe deer". The name refers to the resemblance of the mandibles to deer antlers.
The Capreolinae, Odocoileinae, or the New World deer are a subfamily of deer. Alternatively, they are known as the telemetacarpal deer, due to their bone structure being different from the plesiometacarpal deer subfamily Cervinae. The telemetacarpal deer maintain their distal lateral metacarpals, while the plesiometacarpal deer maintain only their proximal lateral metacarpals. The Capreolinae are believed to have originated in the Middle Miocene, between 7.7 and 11.5 million years ago, in Central Asia.
The Persian fallow deer is a deer species once native to all of the Middle East, but currently only living in Iran and Israel. It was reintroduced in Israel. It has been listed as endangered on the IUCN Red List since 2008. After a captive breeding program, the population has rebounded from only a handful of deer in the 1960s to over a thousand individuals.
Fauna of Wales includes marine and land animals, birds and reptiles that are resident, visitors or have been introduced to Wales.
Rucervus is a genus of deer from India, Nepal, Indochina, and the Chinese island of Hainan. The only extant representatives, the barasingha or swamp deer and Eld's deer, are threatened by habitat loss and hunting; another species, Schomburgk’s deer, went extinct in 1938. Deer species found within the genus Rucervus are characterized by a specific antler structure, where the basal ramification is often supplemented with an additional small prong, and the middle tine is never present. The crown tines are inserted on the posterior side of the beam and may be bifurcated or fused into a small palmation.
Wild Field is a 300 ha nature reserve near the city of Tula in Tula Oblast in the European part of Russia, approximately 250 km (150 mi) south of Moscow. It was established in 2012 by Russian scientists Sergey Zimov and Nikita Zimov as a companion to Pleistocene Park in Siberia.