Category Archives: natural history

Oddity of the Week: Wombat Shit

The wombat is a large, solitary and nocturnal relative of the koala, native to Australia. It has poor eyesight but an excellent sense of smell, which is its main navigation aid.


It also has a very strange ability under its belt: its shit comes out in cubes. Yep, unlike other animals which produce cylinders (eg. dogs), pleets (eg. rabbits) or splats (eg. cows) the wombat’s turds really are cube-shaped.

Why? Well it seems it is all down to the physiology and motility of their large intestines. But it turns out it is also a useful attribute to have.
Find the full story over on The Conversation.

Weekly Photograph

This week, something different in the way of photographic subject …
This is a fly. Actually it was quite a chunky fly and I’m reliably informed it is a common flesh fly (Sarcophaga carnaria). It’s called a flesh fly because it feeds on carrion and other similar undesirables.
When you look at insects, like this, they are amazingly complex anatomically — just look at the feet, the hairs, and the veins in the wings of this beastie. And they are also often surprisingly beautiful. This chappie was quite large, 10-15mm.

Large Chequered Fly
Large Chequered Fly
Norwich; August 2008
Click the image for larger views on Flickr

Your Interesting Links

So here we are then with another round of links to items you may have missed the first time round.
Science & Medicine
It seems that humans are not the only animals who have personal names, but we are probably the only ones who gossip.
Its well known that dogs will eat anything, but why are cats such fussy eaters?


The more we look at them, the smarter crows turn out to be. But are they smart enough to fall in love?
Talking of being smart, it appears that those of us who sleep late are smarter and more creative.
But then you die. Here’s what happens to your body after death.
Meanwhile it seems health experts are explaining drug-resistant bacteria so poorly that people aren’t believing them.
Sexuality
Just beware the rodeo! The sexual positions most likely to cause penis fractures.
But avoid that and researchers have worked out that the happiest people have sex just once a week — and it’s good.

This article on sex for the elderly shows just how tricky it is to maintain the well-being of people in care.
Environment
George Monbiot in the Guardian tells us there’s a population crisis, but it isn’t the one we usually think of.
Meanwhile one way round the population crisis would be to make humans smaller.
You’ve probably heard of guerilla gardening, well now here’s guerilla grafting — activists are grafting fruit-bearing branches onto ornamental city trees. Excellent idea!
Social Sciences & Business
The class system is dead; long live the class system. Apparently the UK is still class ridden, but in today’s society the classes are different.
Why the internet is like a series of lead pipes. Very interesting comparison.
From pipes to streets. Clever cartographers add fictitious trap streets to their maps. Here are some trap streets in London.
Art & Literature
[NSFW] A Japanese museum is aiming to confront the taboo of shunga head on. Is it art, is it pornography, or could it be both?
The British Library is celebrating the 150th anniversary of Lewis Carroll’s Alice in Wonderland with a new exhibition. IanVisits takes a look.
History
In another new exhibition the Wellcome Collection is featuring Lukhang Temple in Lhasa, Tibet’s Secret Temple. IanVisits again takes a look.
Returning home again, did you know that, once upon a time London was the motor manufacturing centre of the UK?
People

Nothing highly salacious to leave you with this time, so here’s the obituary for Roy Dommett (with accordion, above), a true British eccentric. The video is just excellent! [With thanks to Bruce for alerting me to this.]

Word: Aposematic

Aposematic
A zoological term applied to usually bright colouring or markings designed to warn or alarm, and thus to repel the attacks of predators.
According to the OED the first recorded use was as late as 1890 and the word is derived from the Greek ἀπό apo away + σ̑ημα sema sign.
Wasps are a fairly classic example of aposematic marking.

Weekly Photograph

This week I bring you a really poor quality shot, but one for the record. n Saturday lunchtime we had a fox in the garden. This isn’t unheard of, even in daylight, but it isn’t something we see more than about once a year. But on this occasion Mr Reynard hung around for quite a while — maybe 15 minutes — sniffing around the garden and finding the odd tasty morsel which the starlings have missed. So I managed to get a few, not very good, photos. They’re poor partly because I was shooting through the study window, and the window is grimy hence the slight mistiness; but I knew if I opened the window this would be enough to scare the fox away.

fox
Reynard the Fox
Greenford; November 2015

As you can see, Reynard was in pretty good condition — as (s)he should be given the mildness of the weather. What was striking though is the paleness of the coat on the body and the conspicuous black ears and paws.

Weekly Photograph

This week another from our recent short break in Rye. On the way hope we detoured via Dungeness — such a wonderful expanse of shingle and environmentally hugely important. As might be expected there was a lot of sea kale growing; this is one particularly splendid example. But, yes, I’ve tinkered with the photo to make it even more dramatic!

Sea Kale at Dungeness
Sea Kale at Dungeness
Dungeness; September 2015
Click the image for larger views on Flickr

Weekly Photograph

This week’s photograph is one I took last week. We were in Rye for a few days and perusing the showroom of Rye Pottery. I looked in a large bowl and couldn’t help but see this enormous Tegenaria spider — probably Tegenaria parietina but there are several very similar species. The body was around 1.5 to 2cm long and the whole thing, as seen, about 10-12cm across.

Tegenaria parietina
Tegenaria parietina?
Rye; September 2015

These spiders live in buildings — especially old buildings — and walls. Females can live for up to eight years, while males die shortly after mating. They are actually quite harmless to humans.
I know many people don’t like spiders, but how can you not be impressed by a stunning creature such as this.

Your Interesting Links

And thick and fast they came at last,
And more, and more, and more

Yes, we are doing well at present for interesting links to items you might have missed the first time round. Here is the latest instalment, and again I promise you nothing too hard by way of science!
What is it that makes wet dogs smell so? Here’s a brief look at some of the chemistry.

There are definite advantages to being female, and if you’re a cat one of them is that you can have splotchy fur.
Most moths can only make noise by rubbing their legs or wings together, but the Death’s-Head Hawkmoth has a built-in flute. They also eat honey.

We all know that seeds can last a long time just by observing what happens when you turn over an undisturbed piece of ground. But how long can seeds really survive?
And from seeds we’re now on to food … We’re often told that western society eats too much meat and we should cut back. While this would undoubtedly be good for our health, can meat ever be eco-friendly?
Have you ever stopped to think about what cooking oil you use? Well some scientists have and the results may surprise you.
Scotch eggs originated in Scotland, didn’t they? Except they probably didn’t.
Who has ever had hiccups after a meal? Or maybe some other time? But why do we hiccup?
So now to some different aspects of lifestyle. What (if any) are the scientifically proven benefits of yoga? Julia Belluz looks at all the evidence.
I wonder how many of you already know these 9 facts about breasts? No, I didn’t!
How to improve your work-life balance by doing one simple thing? You can’t? Oh yes you can! It sometimes takes a bit of discipline, but I did it many years ago and it worked for me.
Next a couple (more) items — here and here — on why family nudity is actually healthy for kids. Girls especially are more likely to grow up with a good self-body image.
And now a quick shuffle across to the history room where first we find a piece on a little known relic of early 17th century London: the York House Water Gate.
Opening-of-St-Katharines-1828

Slightly later, but still on the Thames, a piece on the creation of the St Katharine Docks and how they changed the working of the docks.
And finally, from boats to trains. Here’s the low-down on the ghost trains of Britain.

Oddity of the Week: Victorian (Medical) Oddities

Warning: not for the squeamish.
Conjoined piglets and two-faced kittens! Oooo-eerrr!
In the 19th century, bodies (both human and animal) were hard to come by, so medical and veterinary schools abandoned many dissections and taught their students using remarkably odd objects like waxwork embryos and exploded skulls as well as preserved specimens like this octopus.


The Guardian has a gallery of more interesting examples at www.theguardian.com/artanddesign/gallery/2015/jul/09/victorian-oddities-two-faced-kittens-conjoined-piglets-in-pictures
Enjoy your lunch!