Thursday 12 January 2012

THE COMMON BRUSHTAIL POSSUM



In the urban centres of South East Australia, Common Brushtail Possums are hated. They’re hated for being noisy, for being aggressive, for being ugly, for being destructive, racist, dodgy bosses, bad mothers, selfish lovers, for punching cyclists, for pissing on the ozone layer, for Packed to the Rafters, for the use of the term ‘bling’ by my mother, for the enduring career of Jennifer Hawkins even though she’s the human equivalent of a Coles docket.

Common Brushtail Possums are not well liked, is my point. 

In the Common Brushtails defense, I’m here to tell you what I told my ex- that which you hate about them (me) are the things that make them (me) special. It is thus that I am leaving you (not you) for a life of promise (my parents’ house). Give me some space (a lift to the train station).

If you don’t know what a Common Brushtail Possum looks like, let me sketch you a picture world with my word pencils. They’re about the size of a cat and range in colour from reddy brown to grey-y brown to grey-y reddy browny grey blacky whitey grey-y grey. Common brushtails sort of look like a sentient ball of dryer lint, but that’s not their fault. Like any good camouflagenist (probably not a word) they’re just mirroring the colour of the place they live, which is Australian eucalypts. And Australian eucalypts, to quote Banjo Paterson, are grey as shit. If you want an interesting-coloured animal you need to go to the ocean where pods of blue whales use their total invisibility against the blue water to mug sharks or South America, where panthers are black because it is mainly night and everyone is a Goth.

SOME BACKGROUND, LIGHTLY SEASONED WITH FACTS

As Melbourne city became more established and urbanised, many species of mammal that were native to the Melbourne area found themselves relegated in diminished numbers to less densely populated, natively vegetated areas in Victoria. Here they could still do things like eat and sleep and successfully avoid dying at the paws of an overweight, asthmatic housecat.

The Common Brushtail had a vastly different experience of urban Melbourne. In fact, they managed to make such a go of it in the Big Smoke that they are now the largest occurrence of any native Australian mammal. They are everywhere; in the trees, in the roofs, in any cavity in brickwork that isn’t already occupied by some painfully casual café that you can only fit your shinbone in and is manned by a barrister called 'Cereal'. Common Brushtails are remarkably successful and their success boils down to the fact that they are as adaptable as a Demtel kitchen utensil. 

I’M GOING TO KEEP TALKING ABOUT THIS

Common Brushtails are adaptable for a few reasons. Firstly, they are dietary generalists. This means that unlike many other Australian mammals, they don’t rely on specific plants or prey for their food. They eat eucalypts, fruits, flowers and insects, depending on what’s closest to their mouth at the time it’s open. For the Common Brushtail then, the urban garden, with its compost bins, decorative flowers, fruit trees and vegetable patches is a buffet wonderland festooned with bits of your old egg.

Secondly, Common Brushtails possess a very low metabolic rate. This allows them to survive in adverse conditions and with less food. It’s similar to how Angelina Jolie survives, when she goes on her daily hike into the wilderness of her own ego.

Thirdsomely, Common Brushtails have a big, adaptable brain. Unlike other marsupials like the koala- that falls off the perch at the smallest disturbance in its habitat or diet- the Common Brushtail just rewires a bit and continues on, like a heroic robot of olde.

But perhaps the most interesting aspect of Common Brushtail adaptability is their social behaviour. Or rather, it’s interesting if you’re me. From what I understand a lot of you aren’t me, so if you’re bored and want to leave this blog, here’s a link to something else. See you round.

Those guys are idiots for leaving. They’re going to miss the shitty graphs I’ve made.

Below is a shitty graph I made showing the division of activities within the average Common Brushtail day. To put it in perspective, I’ve done a side-by-side comparison with me, a female human freelancer:


As you can see, a Common Brushtail Possum grooms considerably more than your average female human freelancer.  Similar to the average female human freelancer however, Common Brushtails spend very little time with their own species. During the mating season, it takes 30 days for a male to get close enough to a female to get some action- such is the females desire to be left alone with her Roseanne boxset and the aioli she just found on her top. 

‘But why?’ I hear no one ask. ‘Why don’t Common Brushtails like each other?”

Well Jiggy McFakename, it’s because the Common Brushtail is a large animal that requires a lot of food and a big nest to survive. As such, Common Brushtails simply can’t share the resources of a territory with another individual. And so they live alone, like novelists and murderers and precocious, wet-lipped 9-year-old boys who can’t wait to teach some Yuletide robbers a lesson.


So hellbent are Common Brushtails on their solitude that they have developed a number of ways to warn other Brushtails off their territory. First is a series of threatening body postures, as evidenced in the drawing below:

Next is a highly developed larynx that makes close to 20 distinct vocalisations. These vocalisations are normally heard just outside your bedroom window at 1am after you’ve stupidly watched a Japanese horror film about a haunted minidisk player on SBS. The sounds, as you well know, range from the low growl of something that is probably going to kill you, to the rasping hiss of something that is definitely going to kill you. And so you curl up into a tight ball of bedsheets, listening to the commotion outside until finally, fear cuts off circulation to your brain and you pass out, dribbling and pantless.

In fact, Common Brushtail possums use these vocal acrobatics to make sure their basic message of “Get the shitting fuck out of my tree” is articulated without having to resort to potentially fatal physical contact. It’s a very smart ploy for the survival of their species, but for our species, is like trying to sleep through a metal dinosaur dry-humping your eardrums.

It is this very subject of Common Brushtails and humans that I’m segueing into seamlessly with this sentence. 


YOU AND COMMON BRUSHTAILS AND YOU AND COMMON BRUSHTAILS AND YOU


Common Brushtails require a tree that’s 115cm in diameter to create a nest. For a eucalypt to be that big it needs to be at least 200 years old. And given a 200-year-old tree is hard to come by in urban Melbourne, Common Brushtails improvise- using their smarts and your roof.

People tend to think they have a Common Brushtail Possum in their roof when in fact they have rats, ghosts or ratghosts. You can ascertain who is subletting your house a few different ways: 

1.  A Wiji board. A very effective device if you have ghosts, using a Wiji board will however, put your home at risk of infestation by hysterical twelve-year-old girls and their affiliated nighttime dental wear.

2.  A Census. Slip a copy into an air vent along with some pencils and retrieve a few days later to discover that our education system has completely failed our marsupials.

3.  Pawprints. Common Brushtail front pawprints have five evenly spaced toes and the hind foot has kind of a thumb mark. Uncommon Brushtail pawprints have Goldrush-era wagon wheel indentations and a trail of slime.

4.  If you want to stop enjoying your life for a bit, crawl into your roof and in the half-dark, really investigate the fecal matter of your tenant. Common Brushtail poo is 1.5-2 cm long and cylindrical, rodent poo is smaller and spherical. Frankly, we were fools to ever confuse them.  

If you do indeed have a Common Brushtail in your roof and you’re no longer enjoying the smell of marsupial piss in your wall cavities, you’ll have to remove it at some stage. Just remember that all Australian native species are protected, meaning you can’t harm an animal or remove it from its territory.  So if you trap your possum and deposit it in some random patch of shrubbery two suburbs over- thus releasing it into certain death**- please know that not only are your actions illegal but reincarnation-wise, you’ll be coming back as a rat STI***.

So here’s what you do. First, make a nest box for your possum. Next, either wait for your possum to leave the roof for the night, or if you like a challenge and facial wounds, try to capture it when it’s still inside the roof. Once the possum is out via your preferred method, seal up that roof like a Nordic waterway. Then release your possum back into your garden, protecting your genitals from attack with one hand and pointing excitedly at the nest box with the other****. Then, over the coming months, rejoice in the wildlife at your doorstep by doing a series of backyard watercolour paintings that you never, ever give to me as a gift.

CONCLUSIONS

In my 31 years on the planet, I’ve had two Common Brushtail Possums rush my head, I’ve had three swipe at my face, I’ve been wrenched from sleep countless times by their screeches, I’ve had their urine drip down my ceiling onto my bedspread and one evening on my way home from work, I was pursued by an uncommonly fast Brushtail through the length of the Carlton Gardens and into oncoming traffic on Nicholson St. And even then, as my life flashed before my eyes and I realised that I’d mainly spent it watching the West Wing, I didn’t hate Common Brushtails. 


So I suppose my point is, you should all try and be more like me. 

Have a great weekend.

Snake Mechano xx

I’d like to thank Kim Hollis from Healesville Sanctuary for her help compiling this report. She is a complete delight and knows more about possums than you do about your own bellybutton. You should go and visit her at Healesville- it is truly the most wondrous place in Melbourne. If I could, I would live there- nestled between a feeding bag and half a tonne of manure. I’ve had a gin.


Here is a link to instructions for building a nest box.
http://www.tvwc.org.au/help/article13/building%20a%20brushtail%20possum%20nestbox.pdf
Have fun.


If you find an injured possum or indeed, any injured wildlife, please contact Healesville Sanctuary. They're extremely good at this stuff. http://www.zoo.org.au/Healesville/AWHC/Contact

*Furthermore, Common Brushtails do not have a set size to their territory and are squat, short-tempered geniuses at figuring out the resources available in an area and the minimum distance individuals can live next to each other. In rural areas, where their habitat has been severely depleted by farming, that may only be one animal per 80 hectares, but in the city it can often figure out to be one possum per garden/roof. Unless things have gone horribly afoul or have become very, very sexy, you will not see two Brushtails living in the same tree.

** In order for a territory to be viable, it needs three things; a stable supply of water, a stable supply of food and a place to nest. Just because a tract of land has plants doesn’t mean that it’s a viable habitat. And even if it has all those things, that territory has probably already been claimed by another animal. Studies show that if you release a Common Brushtail into a new territory, even though it is an incredibly resilient species, it will more than likely die. It is thus better- and legal - to leave Common Brushtails to decide where they should set up shop.

***And even if you did get rid of your Common Brushtail, their social order is so tight that within 24 hours, the viable territory that is your garden will be claimed by another possum. Resistence is thus futile, friends. It’s better just to accommodate them or move to a place that has no possums, like Africa. Africa just has lions.

**** Just don’t feed the possum once it’s in there. You can put some fruit or honey at the entrance of the nest box just to entice it in, but continually feeding a possum is just dumb. It means other possums will come and you’ll end up blowing your house deposit on food for an ever-growing army of unruly, sharp-toothed marsupials.







4 comments:

  1. Do these facts and figures also apply to the New Zealand possum? I live in NZ and we don't have any Australian possums because it is too far for them to swim* and you aren't allowed to take them on the plane.

    We had a possum who lived in the roof but unfortunately my flatmate backed over it by accident.


    *I assume

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  2. Genius Kate.

    In response to "It is Ally", New Zealand possums are (in fact) Australian in origin. They were dumped there some time back and have come to rather like the New Zealand terrain.

    Don't think they swam though...

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  3. Hi 'It is Ally',

    I'm going to have to take your word for it that it is indeed Ally.

    TK is correct- unfortunately the Common Brushtails in New Zealand were introduced from Australia sometime back. It was decided by an idiot that you guys needed them for their fur, possibly to make a series of coats that boasted all the beautiful hues of vacuum dust. So they were deposited on your shores and the Brushtail Possum settled into its new homeland in that bloated, aggressive way that only introduced species can. It's not a great situation and the conservation of Common Brushtails that I allude to in the above doesn't apply to New Zealand or you or your housemate. Although I would suggest he/she finds a better way to deal with them than backing over them in a car. Your government website contains quite a bit of information about them. It is here. Pour yourself a whiskey and really make a night of it, why don't you: http://newzealand.govt.nz/search?query=brushtail+possums

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  4. Truly one of the BEST articles on brushtails I have read. Congrats Kate. I'll be sharing on our own blog at http://www.warwickwildlife.org.au

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