UK Deer Species: Identify All Six

The six deer species living wild in the UK are red deer, roe deer, fallow deer, sika deer, Reeves’ muntjac and Chinese water deer. Only red and roe deer are native; the other four were introduced. This guide compares their appearance, breeding seasons and gestation periods, with photographs to help you recognise what you have seen.

The British Deer Society’s species overview is the starting reference for the six species. They are not all found in every part of the UK: location is a useful clue, but should be considered alongside the animal’s shape, markings and behaviour.

Planning a local wildlife walk? Our New Forest deer visitor guide covers where to look, Bolderwood, seasonal visits and responsible watching.

Practise what you learn with the deer identification photo quiz.

UK deer identification at a glance

Start with overall size and shape, then look at the tail, rump and face. Coat colour changes with season and can vary between individuals. Antlers help when present, but females and males that have shed their antlers need other clues.

On a small screen, swipe the table sideways. Keyboard users can focus it and use the arrow keys. Select a species to jump to its photograph and description.

Use several features together. Fallow and sika can both look spotted in summer, while dark or pale fallow deer may not match the familiar spotted appearance. The profiles below link to the British Deer Society’s detailed accounts.

Native Species

Red deer and roe deer are Britain’s two native deer species. Being familiar or widespread does not make a species native: fallow and muntjac are introduced species despite being well established in parts of the countryside.

Red Deer (Cervus elaphus)

🦌 Physical Characteristics:

• Size: The largest deer species living wild in the UK.
• Coat: Reddish-brown in summer, becoming duller brown or grey in winter.
• Antlers: Mature stags have branching antlers rather than the flattened antlers of fallow bucks.

📅 Breeding & Biology: The rut usually runs from late September to November. Gestation is about eight months, with calves normally born from mid-May to mid-July.

✨ Unique Facts: Stags roar during the rut. Red and sika deer can hybridise, so appearance alone may not settle every identification.

Sources: British Deer Society: red deer and its sika account on hybridisation.

Roe Deer (Capreolus capreolus)

🦌 Physical Characteristics:

• Shape: A relatively small deer with no obvious tail and a conspicuous pale rump.
• Coat: Reddish in summer and grey-brown in winter.
• Antlers: Bucks generally have short antlers with three points on each side.

📅 Breeding & Biology: Roe rut in mid-July to mid-August. Pregnancy lasts about nine months, including delayed implantation; kids are normally born in May or June. See roe deer gestation explained below.

✨ Unique Facts: Roe bucks can make a barking alarm call. Barking alone is not enough to distinguish roe from muntjac.

Source: British Deer Society: roe deer.

Introduced Species

Fallow, sika, Reeves’ muntjac and Chinese water deer were introduced to Britain. Their histories and distributions differ; use the linked species accounts for more detail rather than assuming all four occur locally.

Fallow Deer (Dama dama)

🦌 Physical Characteristics:

• Coat: Highly variable, from the familiar spotted form to dark and pale animals.
• Tail: Longer than a roe deer’s, with a dark stripe down it.
• Antlers: Mature bucks have broad, flattened or “palmate” antlers.

📅 Breeding & Biology: The rut is mainly in October. Gestation is approximately 229 days, or about eight months; fawns are usually born in June and July.

✨ Unique Facts: Fallow were brought to Britain by the Romans and later reintroduced by the Normans. Coat colour alone is a poor way to identify them.

Source: British Deer Society: fallow deer.

Sika Deer (Cervus nippon)

🦌 Physical Characteristics:

• Coat: Often spotted in summer and darker in winter.
• Rump: A conspicuous pale patch with a black border.
• Antlers: Pointed and branching, rather than the flattened shape of mature fallow antlers.

📅 Breeding & Biology: The rut usually falls between late September and November. Gestation is about seven and a half months, with calves normally born between early May and July.

✨ Unique Facts: Stags give a distinctive whistling call during the rut. Sika can hybridise with red deer, which can complicate identification.

Sources: British Deer Society: sika deer and its sika identification leaflet (PDF).

Muntjac Deer (Muntiacus reevesi)

🦌 Physical Characteristics:

• Shape: A small, stocky deer with a characteristically hunched outline.
• Face: Dark markings and conspicuous facial glands.
• Antlers: Bucks have short antlers as well as elongated upper canine teeth.

📅 Breeding & Biology: Muntjac breed throughout the year, with no single rutting season. Gestation is about seven months, so births can happen in any month.

✨ Unique Facts: The muntjac established in Britain is Reeves’ muntjac. A raised tail exposes a white underside when the animal is alarmed.

Source: British Deer Society: muntjac deer.

Chinese Water Deer (Hydropotes inermis)

🦌 Physical Characteristics:

• Shape: A small deer with large, rounded ears and a short tail.
• Antlers: Neither males nor females grow antlers.
• Tusks: Males have long upper canine teeth that project below the lip.

📅 Breeding & Biology: The rut is usually in November and December. Gestation lasts six to seven months, with fawns normally born between May and July.

✨ Unique Facts: Several fawns may be born in one litter. Rounded ears and the absence of antlers help distinguish water deer from muntjac, but check more than one feature.

Source: British Deer Society: Chinese water deer.

Deer breeding and gestation periods

A rut is the mating season. Gestation is the period from conception to birth. Most UK deer species have seasonal births; muntjac are the exception because they breed all year.

These are typical periods from the species sources above, not fixed dates for every animal. For a printable reference, use our UK deer cheat sheet.

How long is a roe deer pregnant?

A roe deer is pregnant for about nine months, including a period of delayed implantation. Following mating in July or August, the fertilised egg does not immediately begin the continuous development seen in most mammals. Development resumes in winter, and the young are normally born in May or June.

The nine-month figure includes this delay, rather than nine months of uninterrupted foetal growth. Source: British Deer Society’s roe deer breeding account.

When are baby deer born in the UK?

For most species, births are concentrated in late spring and summer. Roe usually give birth in May–June; fallow in June–July. Muntjac can give birth at any time of year. The table gives the usual periods for all six species; sightings can fall outside those ranges.

Identifying deer on your land

Record the location, date, approximate size and number of animals. If you can observe without disturbing them, note the rump, tail, ears and antler shape. A clear side view and a view from behind can help with comparison; photographs here show individual animals, not every sex, age or seasonal coat.

For local context, read our guide to deer in Hampshire or sika and deer watching in eastern Dorset. If your concern is browsing rather than identification, our deer damage guide explains what to record and what else could cause similar damage.

Species identification alone does not establish whether management is needed. Our deer management service considers the habitat, impacts and landowner’s objectives. Breeding dates are also different from legal open seasons; consult the country-specific sources in the deer cheat sheet for those.