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.

Colony of red honeybees found in Europe for the first time

Bees across much of Europe have not had an easy time of things in the last few decades, and that has been caused by a variety of things, including: pesticides, climate change, disease, climate change, parasites and nutrition deficiency just to name a few.

Should this new invader spread, it may well be the last straw for our bees across many areas.

Not only is it likely to compete for pollen with local bees, but the bees are also likely to carry various diseases, which while might hinder their health could kill our bees (this is often the case, as with squirrel pox, which kills the native red squirrels fast, but grey squirrels are often immune).

Initially only found in parts of Asia, it is now found around the middle east, and parts of Africa as well.

Having been found near a shipping cargo hub, it is feared that this is how it arrived. If this is true, it seems likely, that others might find their way all over the place through the same method.

The winters are mild in this location, leading to the insects surviving the winter, an advantage that more northerly European destinations have – though climate change is also seeing this advantage reducing, and an increasing number of invasive species growing out of control.

10 year study on the river Otter shows the benefit of beavers to the river

This is the place were beavers first appeared in 2008, though were only fully recognized in around 2013. A full study on the impact of these animals on the river, was launched in 2014 and after 10 years it has reported. The results are incredible, with much of the local environment totally changed.

Space along the river was given over to the beavers, and they have taken full advantage. Their dams mean that in storm conditions, surges are 30% smaller, allowing the river to cope, and not flood towns along its route. An estimated 24 million litres of water is now stored in these beaver areas. This has in turn created areas where toads, water voles dragon-flies and even otters are able to thrive.

Similar impacts have occurred in other places where beavers returned such as Scotland.

Clearly, we should be looking to facilitate the spread of the beavers, and translocating them to suitable rivers up and down the country. Our rivers are known as some of the dirtiest in the country. While much of the blame for this lies with sewage treatment, beavers would likely have a fantastic impact on this.

Rare black tiger spotted in Odisha

A tiger with these markings is rare, but it is not the first time – video at the bottom of the page

Cats are one of the families of species that perhaps show rare colourations relatively regularly. I say relatively, because naturally these can be very rare. Like a black leopard or a king cheetah, these can exist as a recessive gene.

Having said this, a tiger with more black on it, may well be better at hunting when there is little light, which could boost its chances of breeding effectively. This picture is from late in 2023, from Similipal Tiger Reserve in Odisha. There is a significant history of this genetic mutation in this reserve (though that is not particularly surprising, as black leopards and similar are also genetic so tend to occur in the same area for a time).

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Grolar bears or Pizzly bears remain rare in the wild, according to study

Pizzlies in Osnabruck photo credit Corradox CC by SA 3.0

I wrote, yesterday about the fears for the future of the polar bear species, and the problems that global warming are causing. Today, I am writing about another news subject from a few months ago – that of hybrids between brown bears and the polar bears.

Polar bears as a species, are only though to be between 150,000 and 1.7million years old, with most putting their estimate at around 600,000 years. This is very young for a species, and they descend from brown bears, with a 2011 study finding that female polar bear DNA seems to originate from a group of brown bears living in Ireland during the last ice age when vast ice sheets stretched from there to the north pole, and allowed polar bears to truly wander far and wide.

Pizzly’s and Growler bears, while found in nature on rare occasions, would have naturally been so rare as to be insignificant. It is only human caused global warming which has forced these animals together – and regular meetings in the natural world, of closely related species, usually ends up with offspring.

These hybrids (male polar bear and female grizzly ends with a Pizzly bear, while a female polar bear and a male grizzly ends with a Growler bear) are likely to become more common. Polar bears will increasingly have to head south, to be able to survive, and Grizzly bears will increasingly head north for cooler environments, bringing them into contact more and more often.

Donald Trump is president again – impact on the world

I am not going to pretend that this is not bad. Donald Trumps former term was bad for the natural world and the fight against climate change. Likely changes:

  • Leaving the Paris climate agreement again – there is some suggestion that this will lead to a collapse of the agreement. Trump has pushed coal among other fossil fuels, and is likely to roll back various progress. Perhaps a possible hope is Elon Musk and his closeness to Donald Trump – might this relationship mean that less is done against electric cars? Last time, the USA carbon emissions fell despite everything that Trump did (definitely not because). Keeping temperature increases to just 1.5 degrees Celsius is pretty much impossible, if the USA does not do its part.
  • Denialism and doubt will return – it is not just that Donald Trump is not willing to work towards the end of carbon emissions, but he does not believe that global warming is real. This is a real indictment on how he forms his views of the world, as it is a simple fact that the world is warming
  • Clean energy policies will go, along with scientific decisions on wolves and other wildlife within the country. This is quite likely to have an impact on global biodiversity, as the USA will abandon its lead on this.
  • Under Trump the first time, protected status for species no longer required the same protections, and much wilderness in the USA lost its protection. A return to office is likely to make this far worse.

The situation is serious. Having been president before, it is highly likely that trump will be more effective this time, as he knows more than last time. He has retaken the Senate, and it looks like he is going to take the house as well. Will he manage to use his position more effectively? Leadership on climate, biodiversity and many more things will fall open, we must wait and see if other countries step up to fill their shoes, and continue to push forwards.

We are in for another bumpy road

Is Asia’s plummeting fertility rate a going to lead to a crisis, or might it help save the planet?

A large crowd

Of the slightly over 8 billion humans on earth, 4.641 billion, or just under 60% live in Asia. While this is expected to grow to 5.25 billion people in 2055 it will only be 54% (due to increasing populations elsewhere in the world) of global population at the time.

So, what is the problem? An average fertility rate of 2.1 is currently considered necessary to maintain population levels (that is, 2.1 births per female). When the fertility rate drops below this rate, there are not enough babies being born to replace all of the people dying. As environmentalists, this is good, as the human population is thought (by some) to be too high to sustainable retain long-term (estimates as to what population the earth can sustain long-term range from a relatively small 0.65 billion to an enormous 9-10 billion). Of course, it depends on what we consider as sustainable survival – for me, and I hope for most of you, what I would consider sustainable, would be a low enough population to allow all other species on earth to thrive, so I would suggest that a number near the bottom of this list is more reasonable.

Below, we will look at a range of Asian countries with large populations

Continue reading “Is Asia’s plummeting fertility rate a going to lead to a crisis, or might it help save the planet?”

Polar bears are on a collision course with humans

A group of tourists watching a polar bear in its natural habitat

Polar bears are wild creatures. They roam widely, with some having been tracked to a home range of over 6.000,000 square km. One individual was found more than 4000km from where it was before.

Its not even an issue of just giving them a large reserve, as they spend the cold winters roaming far and wide across the worlds oceans. Even in a country like Canada or Greenland, it is not possible to exclude humans from that much land.

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Sweden decides to kill 20% of its bears in its annual hunt

Wild bears in Sweden

Just under 500 permits have been granted for bear hunting, which would drop the countries population under 2000 across the whole country. This is 40% under the population that existed in 2008. This number of licenses gives the game away, it is a give away to the trophy hunting industry, and is not about controlling the population.

While many bear hunters are pleased, there are a significant number who are concerned. Anders Nilsson a hunter in north Sweden said “There are those within the hunting community that are concerned about too many bears being killed off”. This is well above the annual replacement rate, and it is predicted that if this level was sustained into next year, the number of bears would fall below the minimum level of 1400, that is thought that is needed to retain a healthy population within the country.

Bears are a protected species in Europe, and as such “deliberate hunting or killing of strictly protect species is prohibited” with this only being lifted as a “last resort” to protect public safety, crops or natural flora and fauna.

It is feared that the bear is heading in the same direction as the moose, with a population having fallen 60% in the 21st century – having killed too many moose, the hunters are now blaming the bears for killing too many of what is left, and leaving too small a share for trophy hunters in the country. Culls of both wolves (there are currently roughly 450 wolves in the country, considered above carrying capacity, but only because they compete with humans, there is little supported science in working out carrying capacity at this level) and lynx have been increasing (lynx have a population of around 1450, though this is also heavily depressed on what would occur naturally – lynx also rarely target domestic livestock, though in Sweden this is more complex, as reindeer in northern Sweden are semi domestic, being allowed to roam free but owned).

This cull is well above what should be allowed, and is clearly not in line with European rules. It is also highly dangerous, as it risks Sweden’s bear watching industry. 9.2% of the economy comes from tourism, and many of these will spend time in rural areas, trying to see the bears. While it is hard to find numbers for how much money the bear culling brings in, it is certainly lower than the ecotourism potential of each living bear.

I have been lucky enough to see both bear and wolf in Sweden, from a bear hide. Well worth a visit, though, you may feel it worth waiting till the country starts culling fewer. Having said this, visiting to see the bears may instead show the government the value of leaving more bears alive. We have a bear hide on our books in the country click here to see more, or to book your visit, which is likely to be a memory that stays with you for a long time.

Toyota now claims just the electric car market will never be bigger than 30% – you have to be kidding

Akio Toyoda is the chairman of Toyota ($10.2 million earnings in 2023) claims electric cars will never exceed 30%

So, when someone who is chairman of the car company which sells the most cars in the world says something, people listen. Toyota sold a total of 11.23 million cars in 2023, out of a market of around 92 million cars, or around 12% of global car sales. So perhaps he is right? Well a large number of people do not think so.

His arguments against electric cars include

  • access to electricity – 1 billion people worldwide do not have electricity. However, there are only 1.475 billion cars in the world, or 2 for every 11 people in the world. Further more, it seems likely that the 1 billion without electricity, probably also do not have a car.
  • Customer choice – he argues that customers should be able to choose the powertrain they want. However, the electric car has not been explored by Toyota, as they only have one fully electric model, the BZ4X and the UX400e (under the Lexus brand). The BZ4X is a premium car, but it only has an official efficiency of 2.9 miles per KWH, which is worse than the large tesla X gets (this car is over 34cm longer, and almost 9cm taller. This makes it more comparable to the tesla y (still 6cm longer, 2.4cm higher, slightly less ground clearance, but 34% more cargo space), however this car (which you can see is bigger) gets 4 miles per kwh, over 33% more efficient.

Well, lets look at the statistics.

Continue reading “Toyota now claims just the electric car market will never be bigger than 30% – you have to be kidding”
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