The Island’s Deer in the Modern Era – 1


Populations of wild deer on the Isle of Wight have fluctuated since their re-appearance there after the end of the last ice age, with an apparent decline at the end of the 18th century leading to their probable disappearance around the middle of the 19th century.

Wild deer began to re-establish  during the second half of the 20th century, with both Roe and Muntjac being recorded in the 1970s. The former almost certainly swam from the mainland, Roe along with other deer species are occasionally seen swimming in the Solent and Southampton Water, and are not kept in captivity on the island. The Muntjac may have escaped from a tourist attraction which kept that particular species at that time, although others may have subsequently swum across too. By the 1990s there was a small herd of Fallow that were observed in Firestone Copse and on Lynnbottom Tip, whilst further to the west near to Calbourne  Red deer were to be found.

Red deer were farmed at various locations on the island during the last few years of the 20th century whilst Red deer, Fallow deer and Muntjac deer were kept at some tourist attractions but all of these establishments had closed by around 2000.  Captive populations of both Red and Fallow deer are still to be found in deer parks on the island today.

During the 21st century the presence of Red, Fallow, Roe and Muntjac have been recorded in the wild, with a new species, Sika, being noted in 2017.  Again Sika  deer do not appear to have been kept in captivity on the island but there are strong populations of this species resident in the woodlands around the  Beaulieu river, just a few miles away across the Solent. Sika deer are renowned for their swimming abilities which enabled them to colonise the Arne Peninsular in Dorset after their release on Brownsea Island in Poole harbour.

Muntjac deer appear to be the most widespread species,  despite their concerns to the contrary the public authorities have acknowledged that none of these deer are actually causing any environmental problems and although not numerous, wild deer continue to enrich the island’s woodland biodiversity.

If you have seen any deer please take part in the Isle of Wight Deer Survey  locations will be treated with strictest confidence. For periodic updates please visit Isle of Wight Deer Conservation or email

Thank you for your interest and support



New Deer Conservation Group on the Isle of Wight

Isle of Wight Deer Conservation Aims and Principles

Deer have been re-emerging in the wild on the island since the 1970’s with evidence of both of the native species, Red and Roe, being reported and also the introduced species, Fallow and Muntjac. With good populations of Sika along the northern shores of the western Solent it would not be surprising to see them here too.
The presence of deer in the countryside can add greatly to people’s enjoyment of it and the Isle of Wight is no exception to this. We believe that competently managed wild deer can be a positive asset to the island’s biodiversity and economy.
Isle of Wight Deer Conservation was set up in 2015 by a group of qualified deer managers, farmers and landowners interested in maintaining a sustainable population of deer in the wild on the Isle of Wight, managed ethically within the principles of Best Practice.

Deer management goes far beyond simply culling animals and it is the aim of our group to record and exchange details of deer sightings, numbers and species, their age range and any resulting impacts that they may be having on agriculture and the environment.

With this knowledge based approach to local deer conservation and management it is our intention to assist our supporting landowners in keeping stable populations of deer at the modest densities known to be beneficial and by helping to mitigate any adverse localised deer impacts that may occur to agriculture or sensitive environments.
If you support our aims and principles and wish to learn more please visit Isle of Wight Deer Conservation or email

Thank you for your interest and support

For more photos of deer on the Isle of Wight please see the Isle of Wight Deer Album

Red deer hind in woodland

Wild deer are an asset!

Wild deer are an asset! (1)

When properly managed there are many positive aspects to the presence of wild deer, these may include public enjoyment, wildlife tourism, stalking and the supply of true wild venison, a healthy and environmentally friendly meat. All this in addition to the environmental benefit that low density deer grazing brings to woodland biodiversity.

What sort of value can wild deer bring to rural economies?
All too often deer are merely thought of in terms of what a land owner might sell stalking rights for, around £ 2.00 – £ 3.00 per acre, sometimes much more – £ 28.00 an acre in the south of England. Or what a carcase might fetch at the game dealers, currently (2014) £ 2.25 – £ 3.00 per kg. However their economic worth extends well beyond this.
A study from Scotland where there are around 800,000 deer claims that they annually generate around £ 105 million in relation to deer stalking and contribute towards £ 138 million of wildlife tourism. This compares very favourably to the £ 10 thousand cost of deer damage to agriculture there.
But it is not just Scotland that benefits in this way. Research from the west of England also took into account both the positive and negative impacts of deer.

So what are these negative impacts?
A five year study by Defra “Quantifying the damage wild deer cause to agricultural crops and pastures” revealed that many farmers believed that the “damage caused by deer causes significant economic loss”. This research reveals however that “Scientific studies to quantify the actual (rather than perceived) levels of damage, have been either inconclusive or shown that the damage in relatively insignificant.” Exclosure cages were set up in growing crops which variously prevented access by deer and lagomorphs (Hares & Rabbits) and soil fertility was assessed.
Their conclusion was that “The results from the exclosure trial studies showed only one highly statistically significant reduction in yield which was due to lagomorphs only (and not deer).These studies clearly demonstrated that any impact of the foraging behaviour of wild deer on agricultural crops is insignificant in comparison with the variation in yield due to soil fertility levels. “
A study from the East of England where deer are at damagingly high densities claims that “The agricultural damage can be highly localised, even within single farms, particularly when it involves high value crops”
In common with domestic livestock wild deer may be afflicted by ailments but Defra have stated that “The evidence available so far suggests that deer are unlikely to be a significant source of spread for the main livestock diseases, although the monitoring in deer has been low”.

Deer Vehicle Collisions (DVC’s)
Many mainland areas have problems with DVC’s but these are most prevalent where there are not just high density deer populations but also high volumes of traffic and a high concentration of roads, a good local example of such an area is the M3 – M27 interchange outside Southampton.
Fortunately on the Isle of Wight we do not have the requisite high numbers of deer, high traffic volumes and trunk roads or motorways so here at least DVC’s are comparatively insignificant.

So after taking these negative economic impacts into account can it still be financially beneficial to have deer present?
Even after taking into account these negative impacts the Exmoor study put an overall net value on wild deer to the local community at £ 3.2 million per annum, equivalent to £ 1089 per deer with stags being the most valuable at £ 3750 per head.

Are there some examples of how this might benefit the Isle of Wight?
Tourism is one of the most significant sectors of the island’s economy, according to the Isle of Wight Council generating in the region of £ 500 million gross income, by way of contrast Natural England state that “Woodland on the Island is generally under-managed and timber production is a marginal activity as the value of the timber is low and transport to the mainland is expensive.”

It would appear that deer related tourism would be a way of adding value to these woodlands, as well as the doubtless benefit that the light grazing of a low density deer population can bring.

Some tourist attractions such as the Isle of Wight Steam Railway have already appreciated that deer are of interest to visitors urging them to “Settle back in beautifully restored Victorian and Edwardian carriages and discover an idyllic view of the Island’s unspoilt countryside. Keep an eye out for a red squirrel or deer darting away from the train as you pass through ancient woodland, and watch for a solitary kestrel perched on a fence post seeking its prey as the train ambles through open farmland and sweeping downland!”

So what steps need to be taken so that the Isle of Wight can enjoy the rewarding presence of deer?
It cannot be taken for granted that deer will be profitable for our island community, this requires a positive attitude by landowners and managers combined with the appropriate skills.
A properly conceived “Best Practice” based management plan and a deer management group have a valuable role to play in this, not only by helping to keep deer at the modest densities known to be beneficial but also by assisting to minimise any adverse localised impacts such as those on agriculture and to sensitive environments.
The economic benefits of wild deer have not been widely researched, however the available evidence suggests that competently managed deer can have a very substantial positive impact on tourist based economies such as ours.

If you have seen some deer on the island please take part in the Isle of Wight Deer Survey  locations will be treated with strictest confidence. For periodic updates please visit Isle of Wight Deer Conservation or email

Thank you for your interest and support

For more photos of deer on the Isle of Wight please see the Isle of Wight Deer Album


Red Hind 15.3.14 Isle of Wight (2)

Red Deer Hind, Isle of Wight

For more photos of deer on the Isle of Wight please visit my Isle of Wight Deer Album

There are deer on the Isle of Wight!

There are deer on the Isle of Wight!

As a lifelong Isle of Wight resident I first encountered wild deer here around 20 years ago. I sought to discover the local history of these fascinating creatures and their role in our woodland ecosystems.

Deer have long been associated with the Isle of Wight, Red and Roe re-established their presence here after the last Ice Age and in the Neolithic they were to be found co-existing with Dormice and Red Squirrels in woodland in the Undercliff, whilst in the medieval period the nobility hunted deer in Parkhurst Forest and Borthwood Copse.

In common with much of southern England the fortunes of our deer declined during the 18th century leading to their eventual disappearance around the 1840’s. It is only within the past 60 years that deer have gradually started to re-establish on the island with evidence of Red, Roe, Fallow and Muntjac all being seen.

This expansion of the deer population back onto the Isle of Wight appears to have varying origins. Red, Fallow and Muntjac have all been found in commercial deer farms, parks and tourist attractions here, all of which may have experienced their share of escapees. Roe however do not appear to have ever been kept in captivity on the Isle of Wight.

But this is not the only source of deer on the island.

Deer are very athletic creatures on land but what is less well known is that they are strong swimmers that will readily take to the water, especially if they have been disturbed. It is within the normal habits of males of the herding deer, Red stags and Fallow bucks, to travel great distances around the time of the rut in the autumn. With Roe deer the situation is slightly different as both sexes may travel significant distances to set up new territories, usually in the spring.

Even as long ago as the early 17thcentury Sir John Oglander remarked on the presence on his land of a stag that had swum across from the New Forest whilst being hunted and in the modern era deer have been observed swimming in the Solent and Southampton Water. This was probably how the Roe deer whose tracks were seen on the island in 2013 got here.

It is also evident that whatever their origin at least some of these deer are now breeding in the wild. In late May 2013 I had the pleasure of observing a mature hind accompanied by a yearling, I followed these animals over a few weeks and in early June I noticed a change in demeanour of the older animal, she started to behave aggressively towards the younger one and chased her off with her neck outstretched.

Close observation also revealed that she would then head for a particular area of long grasses and overhanging brambles. This is typical behaviour of a maternal hind with a new born calf. By discretely following these deer over the next few weeks I was able to see from some distance through binoculars that this was the typical Red deer maternal group of mature hind, yearling and calf.

The Isle of Wight has long suffered from a lack of sufficient deer grazing, wood pasture habitats are threatened along with the Bats that use these areas as feeding grounds, the loss of Lichens due to overgrowths of Bramble has been noted in Parkhurst Forest. The Wood Calamint, the only native plant unique to the Isle of Wight has also been threatened by more vigorous vegetation. Browsing and grazing by deer are part of the essential natural processes by which these detrimental effects are prevented.

So what of the future 60 years, particularly for our native Red and Roe?

Defra have said that there are plans to draw up a deer policy statement for the island, and the Deer Initiative publishes “Best Practice” guidelines on which these policies are based.

If a responsible and positive attitude is shown by both private and public woodland managers alike, there is every reason to suppose that these deer will play their part in enriching biodiversity on the Isle of Wight and prove to be an attraction for our tourist based economy.

This blog first appeared as one of a series on the Mammal Society’s 60for60  page

If you have seen some deer on the island please take part in the Isle of Wight Deer Survey  locations will be treated with strictest confidence. For periodic updates please visit Isle of Wight Deer Conservation or email

Thank you for your interest and support

For more photos of deer on the Isle of Wight please see the Isle of Wight Deer Album



Red deer hind and calf 2.8.14

Red deer hind and calf

For more photos of deer on the Isle of Wight please visit my Isle of Wight Deer Album

What happens when you have too few deer?

What happens when you have too few deer?

The risks posed to woodland ecology by having too many deer are well publicised but what is less well known is that having too few deer is also very detrimental to biological diversity.

What are the damaging signs of having too few deer?

Typically a reduction in species diversity with fewer more vigorous species coming to dominate, habitats such as wood pasture and edge begin to disappear.

So how might this manifest itself on the Isle of Wight?

We can expect subtle long term changes to our woodland flora with vulnerable species being most at risk. One such plant, the Wood Calamint, which is unique to the island within the UK, has suffered due to mature over growths of Hazel, as a result it is now very much endangered. This rare plant does not enjoy being shaded by more vigorous vegetation, likewise the heathland habitat of the very scarce Reddish buff moth is threatened by woody encroachment, deer grazing is a natural process that helps to prevent this.

Are there any examples of damage to the island’s woodlands that has already occurred?

The Forestry Commission have said that in Parkhurst Forest “Rare, remnant pre-enclosure pasture woodland and open heath grassland species have hung on in the post-enclosure high forest but are under threat from the un­checked growth of vegetation.”

Parkhurst was originally a hunting preserve for the nobility, before the forest was enclosed in the early 19thcentury these pastures benefited by being grazed by around 200 deer.

So why are wood pasture habitats so important?

Wood pasture contains a diversity of flowering species, and are important feeding grounds for lepidoptera, whilst many of our woodland bats feed on invertebrates found there. One of our rarest, the Greater Horseshoe, benefits from feeding on the beetles found in deer dung. The very rare Pearl Bordered Fritillary butterfly thrives where deer grazing slows down natural regeneration and helps to maintain open areas of Bracken in canopy gaps and along woodland edges.

Is there any other evidence of long term damage caused by over growths of vegetation in Parkhurst Forest?

The Wessex Lichens group have reported that some areas are “desperately overgrown with even the rides lost to dense bramble with an under storey of Sycamore between the trees” and that “the forest’s lichen old woodland assemblages are suffering from increasing and dense shade”

Are any of the island’s birds being affected by the lack of sufficient deer grazing?

Three birds that are common in the New Forest but largely absent from the Isle of Wight are the Tawny Owl, Common Redstart and Nuthatch. Beetles such as those associated with deer dung can be an important part of these bird’s diet, the Tawny Owl also feeds on Wood Mice and Bank Voles. In order to catch these small mammals they require some of the habitat within woodlands to be more open without a large amount of dense cover.  The Common  Redstart also prefers these more open woodland areas that deer grazing and browsing helps to create.  It would appear that our local woods are no longer suitable for these birds.

So what might be the best approach to managing deer in the Isle of Wight’s woodlands?

Trinity College, Dublin has recently published some interesting research Exclusion of large herbivores: Long-term changes within the plant community in which they found that excluding deer from Oak woods was harmful to biodiversity, to quote one of the authors, Dr Miles Newman ” Woodland ecology, it seems is a little like life- it’s often best to do things in moderation. If there is too much or too little grazing, these important habitats may lose valuable species for good.”

If you have seen some deer on the island please take part in the Isle of Wight Deer Survey  locations will be treated with strictest confidence. For periodic updates please visit Isle of Wight Deer Conservation or email

Thank you for your interest and support

For more photos of deer on the Isle of Wight please see the Isle of Wight Deer Album


Red Deer Stag

Red Deer Stag

For more photos of deer on the Isle of Wight please visit my Isle of Wight Deer Album

Deer and the environment

Deer and the Environment (2)

It has been said that the Isle of Wight has a unique rich ground flora due to the absence of deer, but is this really true?

This rich ground flora is an undeniable and welcome fact but is it truly unique? How does this relate to deer and what other factors may be involved? I decided to compare and contrast our island with other areas to help determine the truth.

The Isle of Man is an offshore island situated roughly in the middle of the Irish Sea. Geologically it is mainly made up of ancient rock from the Ordovician era.  With an area of around 221 square miles it is almost 1 1/2 x the size of the Isle of Wight. Wild deer are thought to be absent and it has around 127 ha of Ancient Woodland which was studied by the Manx Wildlife Trust in 2011.

They reported that the “woodland flora is in decline” and that compared to the rest of Great Britain the Manx “floral diversity is modest which is reflected in their woodland diversity.”

They attribute this to the levels of “shade cast by planted species and a lack of traditional woodland management with some species becoming rare or extinct as a result.”

Looking closer to home I drew a comparison with the Isle of Purbeck in Dorset.

Purbeck is a peninsular of around 156 square miles, slightly larger than the Isle of Wight with which it shares a similar varied geology and a favourably mild maritime climate. Like our island it is home to woodland bats including the rare Bechsteins, and though not numerous, both Dormice and Nightingales are also to be found there.

There is a substantial deer population in Purbeck which together with the adjoining Poole basin contains around 3000 – 4000 animals. Woodlands amount to around 710 ha of Semi-Natural Ancient Woodland and 674 ha of Plantations on the site of Ancient Woodlands, some of which has been fenced against deer.

Purbeck has many SSSI’s, nature reserves and designated special areas of conservation. Natural England has commented on the “biological diversity and richness” of the area and claims that Purbeck includes “the 10km2 square with the greatest diversity of plant species in the country”.

So what about the Isle of Wight where deer are rare?

The island has around 50km2 of woodland, nearly a third of is considered to be Ancient Woodland.  Within these woods are to be found relics of wood pasture which have deteriorated due to lack of grazing by creatures such as deer. This has also led to Lichens being threatened by shade cast by  vigorous growths of Brambles, whilst competition from aggressive plant species is said to pose the greatest threat to the Wood Calamint, the only native plant unique to the Isle of Wight.

Our rich floral heritage was commented on in the 18th century when deer were more abundant here.  Richard Worsley refers to the island as being the “Garden of England” , whilst the  historian John Albin remarks “Almost every species which are to be found in any other part of England are met with here, a circumstance which must be extremely agreeable to the philanthropic mind, and grateful to the botanist and man of science. They abound in quantity as well as variety.”

It would appear that a mild climate, a southerly latitude, a varied geology and land use, together with the presence of Ancient Woodland are amongst the prime factors influencing floral biodiversity.

It is notable that with a large resident deer population this rich flora is greater in Dorset than the Isle of Wight

If you have seen some deer on the island please take part in the Isle of Wight Deer Survey  locations will be treated with strictest confidence. For periodic updates please visit Isle of Wight Deer Conservation or email

Thank you for your interest and support

For more photos of deer on the Isle of Wight please see the Isle of Wight Deer Album


Red Deer Hind

Red Deer Hind  Isle of Wight

Deer and the Environment

Deer and the Environment. (1)

It has been said that :-

“The absence of certain species such as Deer and Grey Squirrel has a direct benefit for the woodland flora and fauna across the Island ”  and some ecologists fear that if wild deer were to be tolerated here they could “cause immense damage” to our woodlands with their “heavy browsing”.

But is this really true?

In the case of the Grey Squirrel and large concentrations of the invasive non-native Muntjac deer scientific evidence shows that this is indeed the case, but what of the other deer?

The Denny Pens study from the New Forest indicates what happens when you have too many deer. Two enclosures were studied, one control enclosure from which all large herbivores including deer were excluded and another which was artificially stocked with Fallow deer at an extremely high density of 100 / km2. After 22 years most understorey species were absent from the deer enclosure and tree regeneration had ceased.

So how does this relate to the Isle of Wight?

With around 50km2 of woodland this would require a deer population in excess of 5000 animals or by comparison more than double the deer population of the New Forest where  there are currently around 2000 naturally occurring deer spread over an area of around 230km2 of woodland.

So is there a level at which  a re-established Isle of Wight deer population would be beneficial?

Scientific research shows that low density deer populations increase biodiversity, typically at densities of 3/km2 – 7/km2 of woodland with a threshold of adverse impact on seedling regeneration occurring at 14 /km2.

In relation to the Isle of Wight this suggests that a beneficial deer capacity would be in the region of 150 – 350 animals and up to 700 deer before they would need to be reduced by a management cull.

Are there any other long term benefits for the island’s wildlife?

Large herbivore grazing and browsing such as by deer is necessary to prevent wood pasture and wood edge habitats scrubbing over.

The advance of this scrub would lead to the loss of flowering woodland plants. Once these flowering species are lost research shows they may be difficult to re-establish.

These are important feeding grounds for many of the woodland bat species found on the island and one of our rarest, the Greater Horseshoe, feeds on the coprophagous invertebrates associated with deer dung – perhaps this is why it is so scarce here.

So our woodlands – particularly wood pasture and edge habitats may actually be suffering from the relative absence of deer and not benefiting as some have claimed.

If you have seen some deer on the island please take part in the Isle of Wight Deer Survey  locations will be treated with strictest confidence. For periodic updates please visit Isle of Wight Deer Conservation or email

Thank you for your interest and support

For more photos of deer on the Isle of Wight please see the Isle of Wight Deer Album


Wild Red deer Hind 30.4.2014(2)

A wild red deer hind resting in the understorey