Category: Reintroduction

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Colorado is looking to move a wolf pack – less than a year after it was reintroduced

In 2020, wolf reintroduction into Colorado was agreed by the human population there, while this happened in December of 2023, the nearest wolf population lies around 400 miles north in Wyoming, and this is a distance that is easily covered by wolves. As a result, some wolves have turned up on their own.

Around the beginning of September this year, it was decided to move the pack, to halt hunting of livestock that the pack was doing (though generally hunting of livestock is at very low levels). Unfortunately, the male of the pack was killed in the attempt. Given that wolf packs generally contain a breeding pair, and their offspring (cubs and older offspring often from the year before), the female cannot pick another mate from her pack, as they are often all her cubs. The capture of the wolves for translocation, occurred through leg traps, which in this individual became infected and caused the death. A second of the moved wolves has died, after a suspected fight with a mountain lion.

The cubs are intended to be released in the winter, when they are old enough to hunt for themselves, though the fate of their mother is yet to be decided.

This gives an idea of the recovery of wolves around the USA. One thing to note, is that even Alaska has a wolf population that is very similar to the rest of the USA.

It should be noted, that the red wolf is a separate species. Genetic analysis has found that the red wolf has both grey wolf and coyote DNA, but is to distinct to be classed as a subspecies. The map above only lists 17 red wolves in the wild (other sites suggest 17-19). They were reintroduced in 1987, and while their population did grow to roughly 150, hybridization with local coyotes, meant that the population has since collapsed once again. There are an estimated 290 red wolves in captivity, and there has been action taken to remove coyotes in areas where they species were meeting – and people are working towards releasing more red wolves into its range.

Of interest, the Southwest wolf numbers are also known as the Mexican wolf. There are a further 45 across the border in Mexico. This population was thought originally to number in the several 10s of thousands (though given the USA population was estimated at between 250,000 and 2 million both have suffered horrific declines).

As with Europe, the recovery of the wolf is requiring people to learn to live alongside an incredibly wily and potentially dangerous species. However, wolves play important roles in the natural environment, and their return should be seen as a good thing. While occasional culls are necessary, these should be decided on scientific basis, and not at the whim of state politicians, who often choose unscientific culls because it is a vote winner. Many argued against delisting, as the wolf population is below 4% of the historic population (and excluding Alaska, below 2%) but Donald Trump rarely worried about science. What is going to happen to wolves now, as he has been returned to the white house for a second term, we will have to wait and see.

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Platinum Rhino, the worlds largest captive rhino breeding operation sold to africaparksnetwork! (update, instagram embed did not work)

Hearing this news, one might think “great, another 10-20 rhino”? Think again.

Platinum rhino holds as much as 15% of the current wild population in its operation -2000 individuals. Here is an instagram on the news!

This could be great! Current rhino numbers are estimated to be in the low 2000, down 79% since 2011. Releasing the whole herd back into the Kruger could allow numbers a sizable boost, and rapidly move the kruger back towards its former stronghold of the white rhino. However, in the first half of 2023 over 200 rhino were poached from the Kruger, suggesting that this is not going to be easy.

Unfortunately, the Kruger is already one of the best preserved large reserves in the world. Thankfully, rhino horn has dropped in value from its peak in 2012 of $65,000 per kg, down to a current $8000 per kg. It would be good to depress this further, however the risks for the poacher are very high: not only are many poachers killed by the rhino, they are also often killed by other wildlife such as lions – and the Kruger has a sizable number of man-eating specialists.

I suspect the organization will spread the rhino around, across many of their reserves. Hopefully the recognition that farms like this make no sense, will allow them to thrive back in the wild.

Education is still needed in China, Vietnam and elsewhere. Rhino horn is the same substance as your finger-nails, Keratin. Consuming it will make no difference to any medical condition, science has tried to show any positive health benefit, and can see nothing scientific – at best a placebo effect.

Below, is a video about this farm, 6 years ago back in its heyday. Hopefully, all these rhino can recover white rhino populations far and wide.

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Reversing extinction: Marwell zoo and the scimitar-horned oryx

Declared extinct in the wild back in 2000, this species is now not only re-established in the wild, but has a big enough population to now only be listed as endangered (down from critically endangered).

Apart from supplying individuals for the reintroduction, Marwell zoo also helped with strategy.

The video below is just 2 minutes long. While it talks about Marwells other work as well, it shows a number of these animals living wild back in Africa.

This has got to become the reason for zoos. What ever else they do, there are many species at risk of extinction in the wild, these need to have enough captive individuals to re-establish wild populations, should the current conservation fail.

Of course, zoos have many other roles, from education, to fostering a love of wildlife in the next generation.

One thing that they should not be, is a curio house- many zoos are far to worried about displaying albino or melanistic individuals. Now while these individuals are fascinating and can be used as ambassadors for the species, their genetic health should be looked after (all white tigers are descended from one female, and closely related individuals are regularly bred togerther to ensure this trait is passed down. Indeed, as a result of this, white tigers are often not of good health.

The majority of zoos are now like Marwell – while like many, it started as the private zoo of wealthy owners it has turned into an important place of conservation and science. Another of their successes, is the cooperative breeding that occurs as standard in current times, across Europe. Regular loaning of animals is essential, so that we can treat all of the zoo animals in Europe as one single population, thereby  making sure that all animals in the system are healthy.

There are many hundreds of zoos across Europe (some claim as many as 2000, though around 1500 is the estimated worldwide number suggesting that this is a rather large exaggeration. It is likely that around half of the worlds zoos are in Europe, and by cooperative breeding, we can make sure that healthy populations remain in captivity, so that should a population be lost from the wild, it can be returned, when the wild situation improves.

Almost all predictions about human population are expected to peak in the coming decades, and then decline after that. If this pattern is followed, it should be expected that we will need to re-establish wilderness in the future. 

Scimitar-horned oryx have been returned to the wild in Tunisia, and Chad and there are plans to return them to the wild in Niger, in the near future.

Extinction was caused by a variety of features, but the primary one was over-hunting. This has virtually been eliminated, after a ban on hunting of this species was put into effect in 2013. Should this species be allowed to fully recover. In 1985, there was a population of at least 500 of this species living in the wild, so it took only 15 years for it to disappear, as such what is clearly essential is a regular assessment on how this species is faring, allowing earlier interventions.

Saving the natural world, may require this kind of success to be a regular feature.

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How viable is planting trees to mitigating climate change

Back in 2019 NASA wrote an article, talking about planting trees as a way of doing part of the work for mitigating climate change. By looking at satellite images they looked at areas that were recently deforested, or areas which would be easily turned into forests. They came up with an incredible number of 900 million hectares (2.2 billion square acres). If all these areas were reforested with the right trees for each area. Apart from suddenly increasing the worlds forests, and giving breathing space for many species on the verge of extinction, the calculations suggest that these lands would take around half a trillion trees – it would increase forest cover by 25%.

Calculations suggest that the carbon that would be emitted would account for around 200 gigatons of carbon, or reducing carbon emissions in the atmosphere by around 25%. Now alarmingly, this is only around 20 years of current emissions, so it is not the only thing that we would have to do.

Even planting half a trillion trees is not an end of climate change – this is how much emissions we have emitted – but it would be a fantastic start.

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Lab grown milk could arrive in shops by 2024 – without the cows or carbon

Milk is an important part of the diet of many people in the west, alongside other dairy products. It has, in recent years been one of the problems: while many people have cut down on eating beef, far fewer has cut down on dairy – but now, if you do not eat beef, you can stop supporting dairy farmers all together.

This is not to say that dairy farmers are bad. Governments need to create different careers and paths for these people to take out of their current work.

Continue reading “Lab grown milk could arrive in shops by 2024 – without the cows or carbon”
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A flurry of wolves born in California: are they making a comeback?

Grey wolves from Oregon now appear to be thriving in California (where they disappeared from about 100 years ago).

Wolves and cubs in California

Wolves have never been reintroduced to California, instead they were returned to Yellowstone, re-entered Oregan back in 1999, and then entered California in 2008.

Short of a sudden sustained assault on their numbers, they are back in California and are likely to multiply over the next few decades to take back up their position as apex predators. This should not be feared in any way, with sensible management, it could end up benefiting California, with healthier ecosystems, less car crashes caused by wildlife amongst many other benefits.

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Lauren Boebert in the USA has spouted some fear mongering about wolves, and I thought it worth looking at this issue

It is true, Wolves are hunters. More than that, they are incredibly successful hunters. They work as a team, have incredible endurance and a very high level of intelligence. This is perhaps why in the last few centuries their numbers have been greatly depleted.

In places like western Europe and the USA, they were close to extinction as a whole and had become locally extinct in much of their range. So is this fear mongering reasonable? Of course not.

Lauren Boebert spouts rubbish about wild wolves and how dangerous they are

Here she is talking about wolves in Colorado. She quoted figures of 500 attacks from 2002- the present, and stated that 30 people died in this time – scary numbers indeed. However, she was instantly fact-checked – those were the number of attacks around the world not just in the USA, only 1 death occurred there.

Of course, every death is sad, but to put it in perspective, each year 175-200 people die as a result of their car colliding with a deer. So over the same period, there were 3500-4000 car deaths as a result of deer – and wolf presence greatly reduces this, both by reducing the deer numbers, and creating a climate of fear, which makes deer stay away from open spaces, and so cross roads far less often.

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Unknown, seemingly impossible Polar bear population found living in Greenland

2200 polar bears live on the west coast of Greenland. It is unknown how many live on the east coast, but this group appears to be living in a place where they were formerly thought incapable of surviving.

Polar bears appear to be surviving in a place where there is only broken ice to hunt from
Continue reading “Unknown, seemingly impossible Polar bear population found living in Greenland”
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African forest elephants are now considered critically endangered, and African savannah elephants endangered, are the Asiatic elephants safe? And are we killing one of the few hopes humanity has? A guide to what remains

The African savannah elephant has declined by 60% over the last 50 years, and the African forest elephant has declined by 86% over the last 31 years.

So how close are these species to disappearing? There are currently 415,000african elephants in the wild, spread across 23 countries.

Unfortunately, their situation is highly different on different parts of the continent. Botswana still supports 130,000 Savanah elephants, while Tanzania lost 60% of their elephants between 2009 and 2014 (though some reserves till have healthy populations), one place hit particularly hard was the Selous which 40 years ago had over 150,000 and currently hosts 15,000 elephants.

While the African forest elephant was only recognized as a separate species in 2021 (there has been much argument about its status), what is not in question is its horrific decline in numbers. Indeed finding a web page that gives you an accurate figure is hard work, This may well because one does not exist. There has been horrific population declines over recent years, and the density is incredibly varied across its range.

Unfortunately one thing is clear, in areas of the Congo rainforest where elephants have lost, the forest does less well. There are many plant species which rely on elephants to carry their seeds from from where they are dropped. As such, without forest elephants we are likely to loose many species of trees – to the extent that it might threaten the survival of the Congo rainforest itself.

African forest elephat

So how are Asiatic elephants doing? Unfortunately not great. There are 5 subspecies

First, the Indian elephant. This is the best known and most wide spread. Currently their Indian population is thought to be between 27,000 and 31,000, with between 10,000 and 14,000 across another 10 countries. While I am listing 4 subspecies these all look relatively similar.

Borneo elephant – the most positive estimate, suggests that there are 1500 remaining in the rainforests of Borneo

Sumatran elephant 2400-2800

Sri Lankan elephant 7500

Syrian elephant – this species was lost as much as 1000 years ago, and occupied the western most part of the Asiatic elephant range.

As such what is clear, is that while African elephant populations are falling fast there is time to check this decline. The Asiatic elephant populations are far more in danger.

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