Mouse plague grows to biblical proportions across eastern Australia
theguardian.com
theguardian.com
(In case you're sensitive, it's farmers using pitchforks to turn soil in a fallow or recently harvested field that is ridden with rats, which flushes the rats. There are a handful of ratting dogs milling about which immediately chase and kill the rats. The way they do it is the dog grabs the rat in it's mouth and shakes its head wildly. This breaks the rat's back and stuns it. It's actually pretty impressive, if violent and macabre.)
I think there are dogs that would find it fun as heck to live in that area of Australia for a few weeks.
my dog is a terrier/spitz mix and shows this behavior in play (from the terrier side, the spitz side just makes her pretty =). she'll grab a stick or other small item and shake it wildly while bucking about. most people think it's hilarious until i tell them why she does it. =D
Some time back I was pondering how one might teach category theory to kids, by presenting it as cross-cutting patterns in everyday life (eg non-zero one-directional movement along a closed finite path eventually comes back around, as in simple board games, a clock's "we missed 12 today, but we can do it at 12 tomorrow", or "oops, passed an open parking spot - drive around the block".)
I ran around the corner to see what the commotion was and he had it in his jaws shaking his head violently.
Snapped the rats back, then dropped it and walked away. I put the rat out of its misery with a spade then buried it.
Talk about adrenaline!
But yeah rats scream like a little girl screams. It’s fucking horrifying.
Which was a bit of a shocking realization.
Just saying.
Also, the comment saying "that is why dogs like squeaking toys" is spot on, though the idea is probably uncomfortable to regular dog owners.
Is there something special about where they're digging for it to be plagued with such a large amount of rats? It looks like it would take weeks to cover all of their land with this digging + dog method.
That building you can see at about 30 seconds in is on skids, it is a barn/coop for chickens (or perhaps some other similarly small and light animal).
The bottom of the building is slatted to allow waste and other debris to fall through.
Because it's warm, and there's a constant sufficient supply of food it's an attractive home for rats and mice.
On some kind of regular schedule, the barn will be pulled along to a new location to allow the droppings/waste to be cleaned up, and the rats to be killed off.
Disneyland has roughly 400 cats that keep the park largely rodent free, which is a minor miracle given the amount of food there is there.
Oh, the irony.
There's even a guy that skins them and turns then into stubby holders.
It seems that efficient hunters are quite rare to evolve, as there have been lots of ecosystems totally turned on their head with the arrival of a new predator. Stoats, foxes, house cats have all found niches in ecosystems unfilled for hundreds of thousands of years and wiped out many local species. Or maybe the problem is that they are too good, and if left to themselves they would decimate their prey to the point they can't sustain their own numbers and die out; in the long term predators need to exist in an equilibrium.
Their skill set is absurd.
Absolutely silent, leap multiple times their body length, jaws & claws, climb, extremely agile / flexible and fast.
Owls. The larger ones will kill even cats.
American culture is specifically oriented toward preventing this kind of thing from happening. A feral cat is judged to be in need of a home. And there is a very widespread popular effort to say that you are doing something immoral if you don't spay your cat -- if a fertile cat did go feral, it might have children!
But coyotes and maybe even wolves have become more common. Such that I remember people remarking about how a housecat wouldn't last long if left to roam. The predators may have increased due to other prey becoming more common as well, like turkeys.
There’d be at least a couple hundred in any one block. Thousands at night.
Keeping someone captive and ending their ability to reproduce seems more like abuse than love.
"Feral cats are one of the major invasive species in Australia"
"In 2016, 29% of Australian households had a domesticated cat"
"Cats in Australia have no natural predators except dingoes and wedge-tailed eagles, and as a result, they are apex predators where neither the dingo nor the eagle exists"
Based on the given figure of 2 million or more feral cats in Australia, each killing 740 wild animals a year, that's 1.5 billion total.
So, given all that, I wonder why the mice are a problem at the moment.
In this case however when we have hundreds of new mice each day, the fear effect and eating of mice would likely just be a drop in the bucket. The mice from nearby farmland and forests are fleeing starvation. A single house can collect and kill thousands a week and still more are coming, and the flood of mice can start up from apparently nowhere if you live near such areas. The only good thing is that it will stop at some point, and the professional traps can help to keep the situation at bay.
Anecdotally, one.
https://www.nytimes.com/2019/04/25/magazine/australia-cat-ki...
https://en.m.wikipedia.org/wiki/Four_Pests_Campaign
https://www.licas.news/2020/10/07/when-communist-china-waged...
https://en.wikipedia.org/wiki/Mouse_plagues_in_Australia
Interestingly, Australia was home to another, similar explosion of small mammals with high reproductive rates and no or few natural enemies: The rabbit plagues. This seems however largely to have been contained with the release of several viruses that targets rabbits.
People have introduced a lot of animals for their own purposes which are not native to the continent and are now pests in some way.
It’s the disease that makes rabbit have red eyes (very easy to spot from far away). But beware, I’m storytelling from memory, huge details must be wrong.
https://en.wikipedia.org/wiki/Paul-F%C3%A9lix_Armand-Delille
This is a pretty stunning standard. By this standard, most of Africa has no native population. Most life anywhere would not qualify as "native".
Hominids have been in Africa for millions of years, but the Bantu Expansion is just a few thousand years old. It is younger than recorded history -- we have Egyptian records of the peoples to their south, with whom they traded; those people are extinct today. The Bantus reached South Africa at about the same time Europeans did! They colonized it much more successfully, though, largely wiping out the Khoisan who were there before.
There's videos from the last one where there's just entire seas of mice, crawling around everywhere. It's not in this video, but I remember problems like mice straight up eating away at live pigs stuck in their pens.
Edit: corrected Assam to other nearby state names, based on:
I'm not sure on the current commercial baits ingredients, but in any case, a good number of the rodents you're seeing in those photos will have been poisoned rather than trapped & drowned, so you definitely don't want your pets eating them.
Having said that, a neighbour told me recently his dog had eaten some baits -- it was a bit slow for a few days, and 'shat green for a week', but seemed to weather it okay.
I think it was worth something like 30 calories for a mouse. Virtually nothing.
Rats are much larger and can grow to quite large!
the memory of the smell alone still turns my stomach. Mouse pee is rank.
“If you need to drive over it to spread mouse bait, you lose $35 of grain per hectare with wheels running over it,”
They think that mice were reintroduced accidentally by campers, when mice stowed away in camping gear. I was standing there thinking that they could very easily spend millions to eradicate the population only to have it reintroduced intentionally or in another accident six months later.
The biggest issue with poisoning operations is when the animals become bait shy, then it dramatically reduces kills, hence the popularity of warfarin for rodents - they don't associate the poisoning with ingesting the bait, so don't become bait shy.
I suspect in smarter social animals, bait shyness could be passed along as communal knowledge. In NZ we also use "pre-feeding" where the baits, without poison, are dropped for some time to teach the target species that they're good eating.
Predator by-kill can be a real issue though, and I guess it depends on whether the predators are pests also - like foxes and cats in Australia, mustelids in NZ. There's a reason NZ is the biggest user of 1080, there's no carnivorous mammals in our forests that we want to stay there, so if they eat a poisoned possum or rodent, bonus.
That said, Australia has carnivorous marsupials that are highly endangered, so it'll be a different ballgame over there.
https://www.bbc.com/news/world-australia-56466310
Dozens of people have been rescued from floodwaters, and residents in many low-lying communities of New South Wales have been ordered to leave their homes.
I'd buy tickets to Emu war part deux.
Cats are part of the problem, including camels, foxes, horses and other invasive species. They went through a lot of trouble to hunt down cats and contain them. Cats wreck native animal populations. They went so far as to fence off areas and train labrador dogs so that they don't hunt native predators such as the (tiny) marsupial "badgers".
But the problem in any of those cases are the rate of population change. As per TFA, mice are fertile at 6 weeks old. What they don't mention is that their gestation period is 3 weeks, females give birth to up to a dozen pups, and can mate immediately after birth.
So in perfectly suited environments like we have here in Australia now, you're looking at a potential order of magnitude growth every 3-4 weeks.
Cats, snakes, raptors, etc have a near-flat population growth, regardless of the amount of additional food around for them.
New England has more forest area today than it has since the 1700s.
In the metro area, we've also have bears and even a "moose on the loose":
https://boston.cbslocal.com/2018/05/16/bear-in-newton-massac...
https://www.boston.com/news/animals/2016/06/01/moose-on-the-...
Not to mention a mountain lion:
https://patch.com/massachusetts/winchester/winchester-mounta...
You probably don't need a lot of mice with so many of the 4 foot tall rats known as white tailed deer running around.
But also mice are not native to australia and here is a list of plagues of mice in australia since the 1800s https://en.m.wikipedia.org/wiki/Mouse_plagues_in_Australia