Aesculapian snakes are a new species to the UK, but are found in europe. Does that mean that it should be exterminated, It is having a problem in Europe, as temperatures are getting too high for it to thrive.
It is not actually new to the UK! Indeed, while it has been locally extinct for 300,000 years, its relatives have continued to live in Europe. It was lost from the UK in the last ice age, as being a cold blooded animal, it was unable to survive.
It should be noted, that it is around 14,000 years ago that the mammoth was lost from the UK, so our country would have likely been quite different. Still, as it was only lost from here, it is hard to argue that its introduction would damage the UK.
Extinct Californian Grizzly bear photo credit Vahe Martirosyan CC by SA 2.0
Before Europeans arrived, Grizzly bears were relatively common in California, with an estimated population of 10,000, around 20% of the USA population at the time.
For any readers who do not know what a pine marten is, the above will give you an idea. It is an arboreal predator (that is, it hunts in the trees). There are a total of 8 species of marten across the world. Historically, this was the second most common predator in the UK, with only the fox being more common.
Unfortunately, its habit of taking chickens lead to it being hunted ruthlessly. At the current time, it hangs on in Wales, and has a significant population in Scotland. In Ireland, the recovery is far further along.
In the UK, one of the reasons that we miss this little predator, is its impact on grey squirrels. Unlike the pine marten, the grey squirrel is not native to the UK, and its presence does much damage, from its impact on trees, and other plants, to the fact that it carries a disease which wipes out the reds rapidly (so they are incapable of living alongside each other). This is a species which I have followed closely, and while other matters have stopped me blogging on this species as often as I would like, it has not stopped me from reading about it, so you will find summaries of a variety of stories below.
Reintroduction project in Dartmoor: 15 pine martens were released in secret locations within Dartmoor in September. A total of 7 conservation organisations have been involved in this translocation. It is a total of around 150 years since pine martens were last in the area, but the translocated individuals are settling and slowly dispersing across the landscape.
To the right you will find a tiktok video which will give you details on this reintroduction.
While there is no idea where the pine martens came from, they appear to be doing well, and as the video shows, are breeding. While they have not been there long, so there is little evidence yet, it is highly likely that the pine marten arrival will be bad for local grey squirrel populations (a non-native squirrel which does much damage to UK woodland). This is an area of excitment and should be followed closely.
Pine marten spotted on Longleat estate
Pine marten caught on camera trap in Longleat estate in Wiltshire. It is unclear where this individual came from, lying half way between the forest of dean and the new forest (but far from both), but it is thought it has arrived naturally. While red squirrels would not be able to reappear in this part of the country, without help, as all surrounding areas have grey squirrels, should the pine marten survive, it is likley to greatly impact the local popualtion, and create an island, into which red squirrels could eventually return.
Pine marten in the forest of dean
Pine marten were translocated from Scotland into the forest of dean, beginning in autumn of 2019, when 19 were introduced, and a further 35 joined them in the next 2 years. Last summer, there was an estimate of 60 living in the forest, which while not a big increase, it has not fallen.
While the forest of dean covers just over 200 square miles, it is thought that 60 is roughly the carrying capacity. That suggests that the pine martens in the forest of dean need roughly twice as much space as elsewhere, so time will tell if the population can grow beyond this level. Still, it seems likely that this number of pine martens should be able to eradicate the grey squirrel, or at least greatly reduce its number in the area.
The below video shows 3 cubs from around 4 years ago.
Pine marten in the forest of dean
Research is being done on whether pine martens can live in timber forests – which account for a lot of forest in Scotland
Some simple changes may well allow timber and pine martens to flourish alongside each other. Across 1 woodland, a number of nest boxes have been added, which appears to be helping. The plantations are also looking at letting some older trees stay standing, as these are where cavities appear, which is the pine martens natural home. This research is being carried out in the forest of Ae and around Castle O’er.
Pine martens have turned up in a London cemetery, in area of England where they have not been seen for 150 years
The Zoological Society of London ZSL (London Zoo) already had a project in the area with remote cameras, as it is a stronghold for the hedgehog (unfortunately, another species with a horrific decline in the last 20-30 years). It was just one (and this was in 2022, so may well be gone), but it is exciting that such a small area can house an animal like this.
The Forest of dean, is 80 miles away, which is the nearest population, so it is thought that this might have to be the result of an illegal translocation (they are being translocated, but should be done by professionals, with checks and more.
Pine marten recovery is further along, and helps understand how it will work in England, particularly in cities (not the safe zone once thought)
Once almost extinct, for similar reasons in the UK (habitat destruction, and persecution) in 1976 they were given legal protection, and at the same time, forestry started to expand once again. The pine marten is how living in around 45% of Ireland.
The red squirrel is recovering as a result. There was a fear that grey squirrels would survive within cities, as pine martens are generally to shy to venture into even large parks within cities. However, what has been found, is that the abundance of squirrels in cities is a mirage – there are only sustained by populations outside the city, therefore, should places like the green belt around London get settled by pine martens, it is likely that the London squirrels would disappear within a few years.
Similar to elsewhere, pine martens have now also been introduced to the Lake district.
Two of the released tigers in a part of Russia not been seen for 50 years – photo credit ANO WSC
Tigers once roamed Russia from East to West, but by the mid 19th century, the population had fallen to just 1000. However, the question is what was it like originally? Well, one thing we have found out in the last decade, was the fact that the Caspian tiger never existed, this was instead, merely the most westerly population of the Amur tiger. The scary thing about this, is it suggests that the Amur tiger would have roamed possibly millions of square miles of land – and presumably have existed in huge numbers, perhaps over 100,000, though the decline in these numbers is likely to predate modern humans (our ancient pre homo-erectus ancestors were incredibly efficient at killing mega-fauna, thought to be responsible for much of the worlds extinct mega fauna).
While parts of the western end of the tigers range are now well populated by humans, there are still vast areas ready for the tigers return – such as countries like Kazakhstan. This move is perhaps less of a jump forwards – never-the-less, tigers have not been seen in this new area for 50 years.
The Amur tiger population dropped very low, which means that these 6 initial translocations are well suited to form an initial core for the new population, though to retain genetic diversity, it will be necessary to translocate tigers back and forth for the next few decades, until both tiger populations are more safe.
We are a long way from the Pri-Amur tiger population being viable in the long-term, but this reintroduction is a good first step. I hope to see an acceleration of these reintroductions (it was a decade ago that translocation into Kazakhstan was discussed, and this has not yet happened). Is this just the first step in allowing the Amur tiger to return to former haunts, or will this be the only step? Time will tell, but at its worst, this should double the habitat, and potentially the population of the Amur Tiger, and is therefore healthy.
The Siamese crocodile is recovering in Cambodia, with 60 hatched babies this year – more than at any time this century. Five nests were found by locals at the end of June with the eggs that resulted in these crocodilians. Thought extinct, until being rediscovered in Cambodia they have made an impressive recovery since 2012 when the project started, with 196 of this species returned to the wild in the last dozen years.
Local community wardens regularly cross the mountainous area, to check on them. In recent times, they have been observed in new territory, suggesting that their population is growing again naturally.
The skeleton above is the closest we can get to a real mammoth, as a result of their extinction. However, it is not the only missing large species – indeed, the elephant family alone, is thought to have around 30 extinct members. Aside from these, there are 2 known extinct species of the woolly rhino, cave lions and sabre-toothed tigers, and various species of bear, among many others.
If you go back 50,000 years, there were 57 species of megaherbivores (herbivores weighing over a ton), yet just 11 of these survive today – these include the elephant species, the rhino species the hippo and the giraffe.
It is thought that the Galapagos housed a population of roughly 200,000-300,000 giant tortoises, before humans arrived. This compares to a population of around 15,000 at the current time. Rangers have been trying to boost the rate of recovery, by taking eggs from the wild, raising the tortoises in captivity and releasing them, when their survival is more likely – with 560 animals returned to the wild in 2023 (it should be noted, that wild this is an impressive number, at that rate, it would take several centuries for the population to fully recover).
The project (Iniciativa Galapagos) aims to rewild 15 species across the range, including the giant tortoise, iguana and wandering tortoise.
European Goshawks were extinct in Britain at the end of the 19th century (and remained rare for over half a century) but in the last 50 years have made an incredible comeback. In the new forest, in the south of England, there are thought to be hundreds of pairs living wild.
In Thetford forest in Norfolk, an estimated 52% of the goshawks diet was grey squirrel. While it is true that they will also take red squirrels, these are generally better at escaping. More importantly, it is thought that Goshawks could be used to stop the grey squirrels population from growing any further.
As I have written before, the pine marten is also important for the recovery of the red squirrel, as it is far more successful at hunting grey squirrels, and they generally do not cohabit in any part of the country.
This will likely not eliminate the direct need for grey squirrel population to be culled by humans, far from it, but may well help towards the idea of giving red squirrels breathing room.
There are many species around the world which are so important to their habitat, that even a reduction in the population can cause problems – this is one of them. After tadpoles have lost their tails, many will climb onto the hairy back of the water buffalo, getting a ride to other rich feeding areas (and the buffalo gets any irritating flies eaten). There can be as many as 20 frogs on each water buffalo.
Water buffalo were first domesticated 3000 years ago, in Asia, but have proved to be so useful, there are now 200 million spread across 77 countries, on 5 continents. Initially considered as useful animals for plough and similar farm work, in recent times, it has been recognized for its ecosystem engineer duties.
Thriving in wetlands, they can force their way through places that other herbivores fail. While they are not native to many of their current homes, they are capable of filling ecological niches that have long been empty after the initial large cattle like animals were killed off, or all taken into captivity. It should be noted, that in some places, like Australia, there are few to no predators, to control such a large animal, which has lead to a population of 200,000. There is a native water buffalo (Anatolian).
A variety of characteristics help this species to easily fill the ecological niche of the European water buffalo (lost around 10,000 years ago). From transporting seeds in their fur, they fill in many of the roles that the extinct European water buffalo did in the long past. Even in places like the UK, which is one of the most nature depleted countries, the water buffalo are replacing long extinct species, and recovering ecosystems as a result.
This sort of behaviour has to be carefully managed, as in many places, introducing a closely related species can be very costly. In the UK, the grey squirrel has decimated the population of the native red squirrel, and this is not an isolated example, with many others from around the world. However, so long as their effect is closely managed, and there is not a closer relation to the missing species, the impact is likely to be a net positive. Over the last 50 years, 1/3 of the worlds wetlands have been lost, these species, when carefully managed, are likely to be able to bring some of this back.
At the top of the page is an image of every species of flamingo, below you will find some information on each species. Below this, you will find the same for the grebes.
As always, should you work in tourism or conservation of any of these species, do get in touch, we are keen to help people find you. Click on list your wild place on the homepage main menu.
American Flamingo
Found in the West Indies, northern South America (including the Galápagos Islands) and the Yucatan Peninsula. It was considered cospecifc with the greater flamingo, but they are now recognized as separate species (it is also closely related to the Chilean flamingo).
Formerly it was a culture icon in Southern Florida, but was largely extirpated by 1900. Having said this, there are vagrant flamingos in Florida, and these now often stay in the country worldwide.
There are 80,000-90,000 left in the wild, and there are 4 breeding colonies: in South America (in the Galápagos Islands of Ecuador, coastal Colombia and Venezuela, and northern Brazil), in the West Indies (Trinidad and Tobago, Cuba, Jamaica, Hispaniola (the Dominican Republic and Haiti), The Bahamas, the Virgin Islands, and the Turks and Caicos Islands), and tropical and subtropical areas of continental North America (along the northern coast of the Yucatán Peninsula in Mexico, and formerly southern Florida in the United States).
Andean Flamingo
Found in the Andes mountains of South America, it is in the same genus as the James Flamingo. Indeed, the Chilean Andea and James flamingo often share nesting sites and are relatively closely related.
It is considered vulnerable to extinction with roughly 34,000 remaining in the wild, but declining over time.
As with other flamingos they are filter feeders, though what they filter can vary from algae to small fish – which they look for in shallow salty water.
They migrate between salt lakes in the summer and lower wetlands in winter – with the capacity of covering 700 miles a day.
The threat that this species faces, is generally due to human activity of mining and other changes to their habitat.
Chilean Flamingo
Closely related to the American and greater flamingo, it is listed as near threatened in the wild with a wild population of about 200,000. Population declines are due to habitat loss and degradation, harvesting and human disturbance.
While they are only currently listed as near threatened, there is a great deal of concern about falling populations, and as such they are relatively common in zoos and there is an active breeding program..
Greater Flamingo
The greaterflamingo has the greatest of ranges of any species (as you can see from the map. While it is found down the East coast of Africa, it is also found on the northwest coast and the northern coast. It is also present in the middle east, and throughout much of Sothern Europe. Its range also extends into India. It is listed as least concern with a population between 550,000 and 680,000 with between 45,000 and 125,000 living in Europe – the Camargue is the most famous in Southern France
They are listed as least concern
James Flamingo
The James flamingois also found on the high Andean plateau, and is closely related to the Andean Flamingo. It was thought extinct until a population was rediscovered in 1956, and the current population is thought to be around 106,000.
It is currently listed as near threatened, and on CITES appendix 2.
Lesser Flamingo
Found in Sub-Saharan Africa and India. While the smallest species, it still stands 80-90cm tall. The easiest way to tell this and the greater flamingo (with overlapping range) apart is that the greater flamingo has more black on its bill.
Estimates on the number of this species range from “above” 2 million to as much as 5 million.
They generally breed in highly caustic lakes of the great rift valley in Africa, though there are places in India and a few other places as well.
They are classed as near threatened. While their choice of nesting site protects from many predators, it is still true that many flamingos are killed. From fish eagles to baboons and big cats, there are many species who will eat a flamingo if they can get hold of it.
It is well worth seeing this animal in the wild. Seeing 750,000 lesser flamingos on lake nakuru in kenya is a site that is hard to forget.
Visits to see flamingos are well worth it, and while some live in remote places, it is usually a species which is reliable. Please get in touch if you work in tourism or conservation of this species. Click on list your wild place on the home page of the website.
Africa and India set up their nature reserves very differently. In Africa reserves that house lions and leopards, and animals such as this, are very large, often covering more than...
Africa and India set up their nature reserves very differently. In Africa reserves that house lions and leopards, and animals such as this, are very large, often covering more than...
Africa and India set up their nature reserves very differently. In Africa reserves that house lions and leopards, and animals such as this, are very large, often covering more than...
While some sites claim 22 species, my list has found that some of these were extinct (indeed, according to my list there were 3 species that have gone extinct. If there are any experts out there who notice one missing, let me know
We are eager as always to help people find places to see these birds. Do let me know if you work in wildlife tourism or run a place to stay where these birds are regularly seen. Click on list your wild place on the front page of the website.