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August 10, 2019

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compost, Death, Gardening, Permaculture, Recycling, Soil, Waste

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Scientifically hot: in which I fall in love with the Berkeley method of composting

Revenge is a dish best served cold. Particularly when you are seeking revenge against a tree. Given the pace of their lifestyle, you have to drag it out for those guys to really feel it.

So how better to punish a seed-strewing, bat-choking, weedy cocos palm than – not simply chopping it down – but committing it to a doom of eternal proximity to rotting horse shit?

How to torment a cocos palm: shower it with shite

What a red-letter year it has been for composting. The year when I discovered the Berkeley method. It sounds like natural form of contraception and it is hot, but it’s better than that because it works. Time after time after time.

I have thought I had achieved the giddy heights of hot composting before, long ago when Treasure the white Sussex was queen of the chicken run, freaking me out by regularly supping from my vat of compost tea.

The much missed Treasure and her dangerous drinking habits

In those days I was convinced that the way to fast, weed free compost was my trusty tumbler, still the first destination for our kitchen scraps and chookhouse bedding. The tumbler certainly steams when you crack it open to add the week’s potato peel and apple cores, and not just on these winter mornings.

But I guess, like so many other lovely things, you don’t necessarily know whether you’ve really hot-composted, until you actually experience it Then you realise that on all those previous occasions when you thought what you were doing was pretty hot, you were wrong, and in reality it was all distinctly tepid.

Chickens looking for worms in my now-cool heap

Ingredients for my first heap: leaves, ash, straw

First “brown” layer

Layering leaves and manure

Another layer

Covering a pile with palm fronds

So what is the Berkeley method of hot composting and how do you get some of that good stuff?

The Berkeley method involves making a big heap of compost – at least a metre tall and a metre wide – all at once, using layers of high nitrogen (“green”) and high carbon (“brown”) ingredients.

I’ve used a a range of different “browns” – liquidambar and bamboo leaves, pine needles, sugar cane hay from the the chook cage (with its own little payload of nitrogenous ordure) and even cardboard boxes ripped up into small pieces. This is a soothing activity to do in front of television and the only part of compost-making I can get my children have anything to do with).

Berkley method heap 2 featuring lots of bamboo leaves

I usually try to sneak in some partially-rotted “warm” compost from my tumbler as a “green” layer low down in the heap just to keep our household waste systems from being overrun with biomass. As a small household, we don’t really produce enough veggie scraps all at once to create the bulk materials needed for the Berkeley method. Other people use thin layers of lawn clipping but we have chooks so we don’t have any need for lawn mowing. That’s an understatement really – for much of the last three years our backyard has looked like the Somme.

My mainstay for “greens” is, ironically, distinctly brown – vast quantities of equine ordure, acquired at $1 a bag from the horsey country on the other side of the Berowra Waters Ferry. I’m pretty sure my ten or fifteen bucks, left in an honesty box by the front gate, ends up in the pocket of a shovel-fit teenager, which gives me a warm glow. You could get the same amount for free in another farm down the road if you had a trailer and good upper body strength.

It’s a fun weekend outing – I particularly enjoy coming back across on the ferry with the windows down, suffusing the palatial surroundings of the marina and its smattering of Hollywood celebrities with the fruity ambience of a stable.

The always picturesque Berowra Waters Ferry

But if your idea of a good time doesn’t involve intimate encounters with 150 kilos of horse manure, there are other options. Not carnivore poo though. Just in case you happen to live near a zoo and were thinking of a midnight raid for high nitrogen materials, Robert D. Raabe, Professor of Plant Pathology, Berkeley, in his detailed account of hot composting, reminds us that tiger and lion shit are not worth the effort.

In my first few heaps I also added some wood ash after each layer – it‘s high in potassium, can correct acidic soils and since our wood-burner produces loads of it I’m always trying to think of uses for it. There’s also a kind of wedding like gaiety to hurling handfuls of white powder over the mountain of poo which I really enjoy.

I think I got a bit carried away on my last batch of compost, though, as I discovered when my youngest did a science experiment: broad beans growing in three different soil types. My newly made compost was literally off the scale on the Ph test. My vegetables are probably suffering but I suppose at least I now have a convenient lime-rich place for disposing of fresh corpses.

Super-alkaline ash-rich compost

The science experiment in action

Each layer of your heap should be watered as you build it, til the whole thing is about as damp as a squeezed out sponge. If it’s especially wet or hot weather you can cover it to stop it from drying out or getting soaked. As you can see in the piccies above, I roofed my first Berkeley heap with palm fronds, partly to keep my heap from getting too dry and partly just to continue to torment the spirit of the evil tree they were hacked from. None of my subsequent heaps have had a cover, though, and they seemed to turn out just fine.

To be honest, while there are lots of really complicated rules for hot composting – for instance, this article gives a mind bogglingly detailed run down on the carbon-nitrogen ratios of a range of composting materials. But in my experience, a rough and ready mix of about equal quantities of “greens” and “browns” just seems to work.

Then after you’ve built your heap, you just leave it for about five days. All the while you are at work – sitting in meetings, shuffling paper or cruelly inflicting post-structuralist theory on innocent undergraduates – that aerobic bacteria is doing its thing. It’s a curiously comforting thought.

Chooks cleaning up the last few weed seeds

Then you turn your heap. The aim of Berkeley method hot composting is to create a friendly environment for the right kind of bacteria and fungi – the ones that like plenty of air. They work quickly, produce plant nutrients like nitrogen, phosphorus, and magnesium and even smell pretty good (trust me on this). Over the first few days after you build your compost pile, a sequence of different bacteria go to work – first the psychrophilic, then the mesophilic, and finally, once the heap gets to about 37 degrees celcius, the thermophilic. Once the pile gets up to between 55 and 70 degrees, the heat kills off weed seeds and most insects (and some bacteria too). But the thermophilic bacteria quickly use up all the degradable materials unless the heap is turned.

But how do you know if your heap is hot enough? Here’s the advice of one permaculture site: “as an simple guideline. if you can put your arm into the compost up to the elbow, then it is not at 50 degrees Celsius, and is not hot enough”. If the idea of a forearm coated in hot shit doesn’t appeal to you, you can also use a cake thermometer. But perhaps not on the same day as the school bake sale.

I don’t bother with thermometers. After the allotted number of days, I just dig into the guts of the pile. If steam comes pouring out, creating a sort of horse-poo sauna for the shovel wielder, things are cooking. Best not to turn your heap in your PJs or your ballgown,though.

I’m not so sure about white stuff you can see in the picture on the right. According to the University of Illinois‘ composting boffins, this is actinomycetes – “a higher-form bacteria similar to fungi and molds” which feeds on the woody bits in the pile and helps make well cooked compost smell earthy. Robert Raabe, Dr “Afraid of lion poo”, thinks it’s a good sign in hot compost. But it usually turns up in an nonaerobic pile so this pic indicates that while my current heap is hot it probably have been turned a bit earlier.

As the old joke says “What’s the difference between a good gardener and a bad gardener? Two weeks”. Still, with a turn over and a bit of oxygen, I reckon my compost will get back on track. A perfect heap might require that horse do-do up to the elbow but a pretty good heap seems to be manageable without that level of commitment.

My technique for turning the pile is quite primitive – kind of like knocking down a stinky sand castle. I dig into the steaming centre of the pile, shovel the hottest part of the heap to one side (up against the remains of the tortured ex-cocos palm). Eventually the undercooked layer above caves in in a satisfying way. I do that a few times, so the outside part of heap is in the middle, ready to heat up again.

Somtimes when I’m tending my compost heap, I feel like I’m channelling the spirit of a brush turkey dad, as he scratches his big pile of mulch around, keeping the temperature just right for his clutch of eggs.

Brush turkey bloke tending his nest

Having turned your heap, you let the heat build up for a couple of days and then you turn it over it all again. And then again every two days or even once a day if you ever get over-excited. That goes on for about two weeks. The write up of the Berkley method in the University of California’s Vegetable Research and Information Center (my kind of place) stresses that “outdoor exercise is an added benefit” of hot composting.

For a kayaker, all that shovelling is not bad thing at all, leaving aside the fabulous pile of compost you get at the end of the three weeks of relentless digging. It’s hot composting and hopefully you get hotter in the process of making it. Truly, there is no downside.

Some other posts about gardening experiments

My attempts to grow luffa…. no it doesn’t come from the sea!

Night of the living mulch: cover crops for the zombie apocalypse

The ginger family stole my brain!

DIY by subtractions: the kiwifruit arbor

From battery to backyard: the story of our rescue chickens, Dusty, Crumpet and Ruff

Turning our garden into whipbird habitat by making a mess

References

Antonella Anastasi, Giovanna Cristina Varese & Valeria Filipello Marchisio
(2005) Isolation and identification of fungal communities in compost and vermicompost, Mycologia, 97:1, 33-44

Yan Guo, Jinliang Zhang, Changyan Dengand Nengwu Zhu (2012) Spatial Heterogeneity of Bacteria: Evidence from Hot Composts by Culture-independent Analysis Asian-Australian Journal of Animal Science Vol. 25, No. 7 : 1045 – 1054

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mccnmatt

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September 14, 2018

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Backyard birds, Fruit, fruit trees, Gardening, Insect pests, Insects, Native birds, Plants that attract wildlife, Subtropical gardening, Uncategorized, Weeds

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Blue eyes and biteys

The glamorous eye of the brown cuckoo-dove

We’ve had a visit from some old friends this week: a gorgeous pair of brown cuckoo-doves. who each took a constitutional around our patio before reconvening for an exhaustive mutual preening session above the chicken run. They’re rainforest birds, but don’t mind wandering away from damp gullies in search of tucker – fruit, mostly, along with seeds and the occasional flower blossom. You’ll often find them in disturbed areas and roadsides, feeding off weeds like lantana and wild tobacco, so what with the great swathes being carved, legally and illegally, through East Coast bushland, they’re doing better than many other forest loving critters these days.

And they are expanding their range as well. Back in the day, Sydney was the southernmost point you’d reliably find a cuckoo-dove. No longer. Just a continuation, I guess, of the species’ earlier journeys from the north, where several close relatives still live. In fact, the amboyna cuckoo-dove of Indonesia and the Sultan’s cuckoo-dove of Sulawesi were considered part of the same species only a couple of years ago when I last wrote about these portly visitors.

Cuckoo dove looking back from water crop

Brown cuckoo-dove quenching its thirst in our bird bath

I’m not sure what attracted them to our place, now we’ve executed the humungous broad leafed privet that used to lure them here. The fruit-bearing natives we’ve planted to replace this nasty weed – lillypillies, blueberry ash, koda, bolwarra, native gardenia, small leafed tamarind, brush muttonwood – are all too teeny to offer snacks of any significance. I spotted the cuckoo-doves innocently drinking from the bird bath but I suspect they may also be implicated in the overnight disappearance of the fruit from our mulberry tree. Though since I chose to plant the mulberry right next to our washing line, maybe that’s a good thing.

Cuckoo dove long tail amend

For me, cuckoo doves are all about those beautiful blue eyes, though their exceedingly long tails are also a feature, helping them with fruit nibbling acrobatics, and at one time earning them the name pheasant-tailed pigeon. But as far as science is concerned, they’re mainly interesting for their body lice.

A female brown cuckoo-dove being groomed by its mate

Normally, it seems, parasites co-evolve with their hosts. A family of lice tend to be found only on one family of birds (and in fact, each species of lice normally exclusively hang out with one species of bird). But the Ischnocera – the family of louse that this pair are trying to remove from each other, in a rather romantic manner – can be found on all manner of birds – not just pigeons and doves, but also pheasants, quails, partridges and indeed megapodes. Though not apparently our local megapode, the brush turkeys, or “the bloody bloody brush turkeys” as they are usually referred to in our household.

But if cuckoo-doves brought their own personal payload of body lice with them when they moved south to Australia, they also do a fine job of cleaning up some other pesky insects – fruit flies. Along with ripe fruits, cuckoo-doves gobble up loads and loads of larvae. One researcher went so far as to say that vertebrates like brown cuckoo doves are the “natural enemies of fruit flies” (Drew, 1987, 287), words to bring joy into the heart of a sub-tropical gardener. But further reading crushes these dreams. Yes, cuckoo-doves, (along with rats) made a huge dent in the fruit fly population. But unfortunately, they did so in the course of eating most of the available fruit.

I guess, then, its lucky I’m hooked on the looks of our frugivorous visitors, and I’m not banking on them for pest control.

The blue eyes of the brown cuckoo-dove

Additional references

Drew, A. J. I. (1987) “Reduction in Fruit Fly (Tephritidae : Dacinae) Populations in their Endemic Rainforest Habitat by Frugivorous Vertebrates” Australian Journal of Zoology 35 283-8

Gibbs, David (2001) Pigeons and Doves: a guide to the pigeons and doves of the world, Bloomsbury Books

Gosper, Carl and Gosper, Dennis (2008) “Foods of Pigeons and Doves in Fragmented Landscapes of Subtropical Eastern Australia” Australian Field Ornithology, 25, 76–86

Johnson, Kevin, Weckstein, Jason, Meyer, Mathys (2011) “There and back again: switching between host orders by avian body lice (Ischnocera: Goniodidae)” Biological Journal of the Linnean Society, 2011, 102, 614–625

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March 15, 2018

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Backyard chickens, Damage caused by chickens, Exclusion pest control, fruit trees, Garden trees, Recycling, Waste

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Sweet dreams, baby avocado

It’s hard to love a plant with a death wish. I’m on my third generation of spindly unwell looking avocado trees now and it’s starting to get old.

It’s hard to believe that a plant that springs spontaneously from seeds carelessly cast into the compost could be so very hard to keep alive. Pretty much all the other trees I’ve sourced from the prompt and knowledgeable online nursery Daley’s Fruits have taken off without a hitch, but after several years of abject failures I’m starting to feel like the Avocado Angel of Death.

Or maybe it’s not me, maybe it’s my naughty chickens. My avocados need protection, by which I don’t mean armed body-guards, though I’m not saying I haven’t considered that.

Apricot the Sussex playing the innocent

Futon base protection for my nashi pear

New growth on the nashi pear

I planted a low-chill nashi pear a few years ago in a perilous location, right next to the giant trampoline that is the social hub for all the neighbourhood kids. It’s going gangbusters, despite the ever present danger of being crushed by pre-teen gymnasts and the surrounding scorched earth environment created by the chooks. The enclosure I made for it out of the slats of a bed base found by the side of the road, for all its “chook-house tolerances”, is still going strong.

The bed-gate

Winter and the neighbour’s chicken, Big Jenny.

Shima and Apricot creating a scorched earth environment

And the gate constructed from a surplus-to-requirements Ikea bed continues to serve its purpose of keeping all but the most determined and agile chickens out of my bush tucker garden.

Who knew bedroom furniture could be the key to a flourishing food forest?

With these sleep-related successes in mind, I decided to turn to a wooden cot, long stashed under the house, into surrounds for my two poorly looking avocado trees. You often see cots like this by the side of the road during the council cleanup, so this is a project for everyone, even those without anklebiters.

My suite of tools

With the addition of a handful of mismatched screws and a small number of shelf brackets I bought on an over-excited visit to the hardware shop many moons ago, I was able to put two surrounds together from one cot in my dining room in the space of a few hours. Warning: do check the dimension of your door frames before trying this at home.

Surround 1 done and about to start on number 2

Brackets at the base of the surrounds, screws at the top

The first surround featured the rather stylish cot head and foot, spliced together with the cot base (cut in half). The four panels for the other were made by bisecting the two sides of the cot. With a modicum of creativity, I was able to use the holes already drilled in the frame and a few self-tapping screws. The only time I needed a drill was to add the slightly unglamorous pieces of hardwood across the top, which I included to ramp up the degree of difficulty for ambitious or athletic chickens (Winter the escape artist leghorn, I’m looking at you!) to fly inside. Those with fatter or more docile chickens might not want to bother with this addition.

The nice thing about repurposing existing furniture if your carpentry skills are as impaired as mine, is that you can rely on the expertise and functional set-square of the person who put together the joints in first place. So the finished surrounds look fairly regular, despite my inadequacies with a tape measure.

And so far, despite a giant tree being hacked down more or less over the top of them, the surrounds seem to have done the job. The chickens have done their level best to squeeze between the slats but haven’t quite figured out how. The avocado roots are no longer being ripped from the ground on a daily basis in the search for invisible but delicious invertebrates, and the trees are (perhaps overly optimistically) producing new leaves.

“There’s gotta be a way in somewhow”

“If only i had a longer neck”

On my past track record, it seems highly likely that these avocadoes are still doomed, but at least I’ve done my best to put their troubles to bed. Sleep well, little trees!

The two cot-surrounds in place

New growth

The girls having a dig

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December 21, 2016

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brood parasites, Native animals, Native birds, Pollination, Uncategorized

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Poor lost souls

koel-mouth-open-cropped

There’s new sound in the garden just now. A plaintive relentless cheeping. But not the tiny piping tones of a naked, newly hatched chick. No, it’s the muscular alto plea of the ginormous eastern koel chick to its diminutive red wattle bird parent.

And the wattlebirds are desperate. I eyeballed the juvenile koel, lounging comfortably high in the canopy. Meanwhile its parent wheeled and fluttered in frenzied manner, perching here and pecking there, apparently driven to madness by the insatiable appetite of its parasitic offspring.

wattlebird-and-begging-mouth-cropped-square-tighter

wattlebird-about-to-feed-for-crop-square-tighter

koel-and-mum-with-bent-neck-for-crop-amended-small

No sooner was the mega-chick fed than it returned to its incessant harping, as if unloved and cruelly abandoned.

koel-curved-neck-crop-real-crop

As I crashed around trying to get a clear shot of the elusive ear-splitting koel, I saw, at the top of the very same tree, something I’d never seen here before, something genuinely sad and alone.

flying-fox-illuminated-ears-cropped

A flying fox all by itself, a good twenty kilometres from the nearest bat camp way down the Pacific Highway at Gordon.

Flying foxes are very mobile, travelling up to 120 kilometres a night to feed. We often hear them around our place on summer evenings, squealing and hurling fruit around. During the year they migrate long distances following the peripatetic flowering seasons of eucalypts, melaleucas and rainforest trees, pollinating as they go. Just like giant warm blooded bees, they carry pollen on their fur from one fragment of forest to another. Flying foxes have been tracked moving as far as two thousand kilometres over the course of nine months and bat encampments have been described as more like railway stations or youth hostels than places of permanent residence.

But mega bats are sociable creatures and finding one on its own in the daytime like this is not a good sign. I realised later I should have called the local WIRES group so someone with more expertise and a better head for heights than me could shin up its extremely tall tree to check it wasn’t injured by any of the usual suspects – barbed wire, open weave fruit netting or a dog bite. But by the time I worked that out, it was the next morning, and the bat was gone – back to its digs in the local “Batpackers”, I hope.

I know some people feel about flying foxes the way I do about brush turkeys. If you’re a fruit grower in NSW it is still possible to get a licence to shoot them to protect your orchards, although the mega bats actually prefer pollen and nectar as a food source – and tightly secured, finely woven netting (one you can’t poke a finger through) protects crops better than a shotgun anyway. In my backyard, the bats would be at the back of a very long queue for the ripe fruit anyway. Ahead of me, of course, but behind the cockies and the possums for sure.

Deforestation means that there’s more conflict between flying foxes and humans these days, as the bats move into the leafy suburbs where the fruiting and flowering plants are diverse and well watered. They’re chatty critters with some “interesting” habits – urinating on themselves and then fanning their wings to cool down for one – which some people living nearby can find a hard to take (not to mention a couple of rare but deadly bat-borne diseases).

But the visibility of flying foxes in east coast Australian cities conceals the fact that (unlike brush turkeys) their numbers are in major decline. One article suggests that at current rates, the grey headed flying fox, the type I found in my backyard, will be extinct by 2070.

The mega bats are particularly susceptible to high temperatures. They start to “melt from the inside” in the words of a scientist, at just about the same temperature that is unsupportable for stingless bees, 43 degrees C. A couple of years ago in Queensland, 45,000 megabats, mostly the tropical black flying fox, died in one day during a heat wave. But high temperatures may just be the final straw when bats are short of food anyway.

Over the last couple of weeks, there have been scores of baby grey-headed bats found dead in parks along the east coast. Both habitat loss and the aftermath of an El Nino, according to researcher Peggy Eby, have led to a food shortage.

“The mothers are going through a difficult nutritional phase, and they’re reducing the amount of milk they’re producing and the young starve. They hang on to the females for the first several weeks of life, when she flies from the roost at night, and they simply would lose the strength that they need to hold on.”

I’m not sure why this stray found its way to our yard. I hope it wasn’t injured here. We don’t have a dog or barbed wire and we use veggie nets to keeps the bowerbirds and the brush turkeys off the fig trees (or if we’re feeling cheap, old trampoline netting from the side of the road). But we still haven’t raised the cash to chop down the nasty cocos palm that is so appealing and yet so dangerous to flying foxes.

I hope the neighbours’ pool gave was a spot for a cooling bellydip and the jungle at the bottom of the yard gave it somewhere to recoup, recalibrate its GPS and get ready to head back to its pals at base camp. Lovely as it was to have the chance to take his photo, I hope we hear him but don’t see him again.

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June 25, 2016

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Animal communication, Anthropomorphism, Backyard birds, Gardening, Native birds, Satin bowerbirds, Uncategorized

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R2D2 in black and white

Poseur juvenile magpie

Catalogue model juvenile magpie amongst autumn leaves

I’ve been spending a lot of time with magpies lately. “Model magpies” as my nine year old aptly described these two who spent the day posing in the Japanese maple and prancing around the back deck. Oddly enough, the companionship steps up in intensity whenever I stop typing for a snack.

This gang of youngbloods don’t spend all their time begging for food and doing catalogue shoots, though. There’s also the occasional training session for the Olympic synchronised vogueing competition.

Synchronised posing from juvenile magpies

… And pivot!

… and the querulous look

…. and finally “Blue Steel”

And, of course, plenty of carolling. The juveniles spent a lot of time last week singing for their supper, until one of the grown-ups got jack of the whole thing and flew down to show them how it was done.

But not before the youngsters did their party trick. In amongst all the mellifluous warbling, my ear caught some distinct moments of robotic squeaking and clacking. The magpies were doing a bowerbird impression.

Adult magpie carolling

Two juvenile satin bowerbirds in the bottom of the garden jungle

Apparently Australian birds are uncommonly good at mimicry. Lyrebirds are famous for it, but all sorts of implausible suspects have a line in impressions as well: magpies, mistletoe birds, silver eyes. Apparently the minute brown thornbill has been recorded mimicking a pied currawong – a bird forty times its size.

Brown thornbill vainly attempting to be a currawong

Silvereye

Why do birds mimics the songs of others? Pretending to be something bigger and tougher for self defense purposes seems to be one motive. Bowerbirds have been observed doing raven impressions while being mobbed by a colony of those rather nasty bell-miners, for instance.

Another seems to be showing off to make yourself look good to potential mates. Researchers have found that male bowerbirds that can only manage a one or two rubbish impressions (singing “like a kookaburra with bronchitis”, as the researcher cruelly remarked) have less mating success than those who can effortlessly produce a good five.

The most hilarious explanation I’ve read for bird mimicry is to chill out sexual partners. Researchers reckon that R2D2 style squeaks and clicks that satin bowerbirds make while courting can freak out their mates:

“by interspersing melodic mimetic laughing kookaburra and Lewin’s honeyeater calls between episodes of harsh mechanical calls, males may calm females and improve the likelihood of that females will stay for additional courtship and copulation” (Borgia and Keaghy, 2015)

The idea that a sudden explosion of kookaburra calls would mellow you out and get you in the mood gives me a good picture of why certain male bowerbirds (and possibly particular male ornithologists) might be unlucky in love.

Female (or juvenile) satin bowerbird reaching for pittosporum fruit

Satin bowerbird flying away

Satin bowerbird flying away 2

While not as famous as lyrebirds, bowerbirds do some pretty amazing impressions, not just of individual sounds but of whole acoustic scenes. How’s this, observed from a toothed bowerbird?

A male started with the sounds of a group of people talking as they moved through the forest with their machetes cutting bushes and dogs barking, and continued with the sounds of machetes being used to fell a tree, complete with the rattle of shaking leaves after each blow and eventually the sound of the tree falling and hitting the ground with a crash (Borgia and Keaghy, 2015, 97)

The humble magpie doesn’t do badly either. They’ve been recorded copying 21 different species of bird, as well as the sound of horses, dogs, cats and humans. Magpies, it appears, only imitate critters that share their territory, not just the blow-ins and passers by, so it makes sense that our youngsters copy the satin bowerbirds that seem so spend much of the year in the garden, eviscerating my beans and kiwifruit vines and making free with my broken pegs.

I’ve got a whole new agenda in the backyard now. There’s those in-flagrante males doing kookaburra impressions to listen out for. As yet, I haven’t found any references to magpie calls appearing in the satin bowerbird repertoire. Maybe this will be my contribution to science. Better still, maybe I’ll catch a bowerbird in the act of ripping off a magpie doing a remix of another bowerbird. Or the other way round.

Female bowerbird in our dawn redwood

Mature male with designs on my chilli plant

Additional references

Borgia, G. and Keaghy, J. (2015) “Cognitively driven cooption and the evolution of sexual displays in bowerbirds”in Irschick, D., Briffa, M and Podos, J. (eds) Animal Signalling and Function: an integrative approach, Wiley Blackwell

Kaplan, Gisela (2015) Bird Minds, CSIRO Publishing

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mccnmatt

Posted on

June 5, 2016

Posted under

Backyard birds, Fruit, Fruits for shade, Gardening, national parks, Permaculture, Rats, Satin bowerbirds, Seasons, Weather

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A flash of gold and a stash of blue

yellow boat and low cloud horizontal larger

Season of mists and mellow tinnies: the Hawkesbury in fall

Autumn lasted for aroundabout a fortnight this year. The endless summer of an apocalyptic El Nino wrapped up in mid-May, giving the deciduous trees an extremely tight schedule to dispense with their leaves before this weekend’s torrential rain.

“Apollo” muscadino grape vine leaves

The neighbour’s rather confused liquidambar

Liquidambar autumnal leaves

Persimmon leaves turning

Yellowing grape leaf

We’ve had autumnal glory in the kitchen as well. When Keats talked about the “season of mists and mellow fruitfulness”, I’m not sure he was thinking about bananas. In theory our crop of tiny fragrant fruits should have been perfect for lunchboxes, but I made the mistake of describing the first-ripened one as “Geoffrey”. After this, not only Geoffrey but all his brothers were deemed “too cute” to be eaten.

Gary Cooper is quite impressed with our collection of home grown bananas

Geoffrey’s cousin

Literally a hand of bananas

As well as the gold in the fruitbowl, there’s been plenty of gold in the trees. The yellow-tailed black cockatoos are back in force, mewling and crunching in the radiata pines.

Yellow tail and autumn leaves horizontal

Fly by from a yellow tailed black cockatoo

And for the first time this year, I’ve noticed the migrating yellow-faced honeyeaters. Thousands of them pass through the Blue Mountains most autumns, it seems, but this year they’ve been funnelled between the mountains and the coast, through the Hunter Valley. I first spotted them darting through the riverside casuarinas at Karuah National Park, on our trip north, but since we’ve been back, I’ve seen flocks of them with their travelling companions, the noisy friarbirds, pouring up the Hawkesbury. I’ve even seen them on the way to work, taking a moment out on their journey to watch the commuters boarding the morning train at Berowra Station.

Noisy friarbirds on the move up the river

Yellow tail captured exactly this time last year

Yellow-faced honeyeater at Berowra Station

But not all the autumnal excitement has been touched with gold. Last weekend, halfway through detaining my broad beans (fencing, netting and a mulch of lavender and liquidambar – doubtless all in vain) I spotted a little collation of royal blue underneath the pomegranate tree. Nerf gun ammunition, the lid of a milk container, a peg. Signs that we need to tidy up the yard, and a hint that randy bowerbirds might just do it for us.

Female bowerbird on the look out for an attractive collection of nerf gun pellets

The beginnings of a bower?

More autumnal reflections from our backyard:

Let them eat light!

Autumn in terminal decline?

Backyard gold

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mccnmatt

Posted on

May 14, 2015

Posted under

Garden trees, Gardening, Plants and what I know about them, Possums, Seasons

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Let them eat light!

Green and orange for closeup real crop horizontal

It’s persimmon season, but, natch, nothing doing on my little Nightingale tree, despite a grand show of weird naked-looking flowers in the spring. Two fruits nearly made it to the finish line, but the possums got there first.

Gorgeous as the golden fruits are reputed to be as they hang on the leafless trees, 2016, I have decided, will be the year of picking green. The persimmons may well be mouth-puckeringly unripe but as human overlord of this place, I insist that it is I who will enjoy their high-tannin nastiness, and not some upstart marsupial.

In fact, my tree is an old fashioned astringent persimmon: the fruits need to be “bletted” to go super soft and sweet. This can happen far from fruitflies and other critters, deep in the pantry, in the comforting darkness of a paper bag, with only an ethylene-emitting banana for company. I have days when crawling in next to the banana to be bletted myself sounds like a good gig.

In theory, me and my persimmons can hole out for a few weeks in an undisturbed corner and it should work out delectably for both of us.

Persimmon flowers last spring

Leaf shadows

Nightingale persimmon tree

But, really, I don’t care! Harvests mean nothing to me! A barren tree is a beautiful tree.

For now, it’s all about the komorebi, a Japanese word I encountered for the first time a few days ago in the marvellous nature blog, Mildly Extreme.

Because who needs food when you can have sunlight filtering through though autumn leaves?*

Love those leaves…

*but thank god for the Freemont mandarins

*Love those leaves… but thank god for the Freemont mandarins…

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mccnmatt

Posted on

October 5, 2014

Posted under

History, Work

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The earth for all, not for the few

… not forgetting the chickens

A Labour Day message embroidered on a banner from the wonderful British Peoples’ Museum. Poultry care and redistribution of wealth: a fine and logical connection. Are there any industrial folk songs about gardening? If so, I don’t know them.

So I might have a hum along to “The Manchester Rambler” while I’m in the backyard today, relishing a long weekend gifted to me by yesterday’s union movement: “I may be a wage slave on Monday, but I am a free man on Sunday”*.

Protesting too much

We might ask, of course, is this elegant female sower of seed free from household drudgery on a Sunday? It seems unlikely. Her brother may be up in the mountains getting all his pleasure the hard moorland way, but she is probably going to have to go inside any minute and mop the kitchen floor. So, in solidarity, no housework for me today! If you want me, I’ll be in the garden.

*Okay, more accurately in this case, I’m a wage slave on Tuesday but that doesn’t scan nearly so well.

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mccnmatt

Posted on

May 12, 2014

Posted under

Exclusion pest control, Gardening, Recycling, Vernacular architecture

Vernacular architecture in the suburbs pt.1

When you finally realise that golf is a good walk spoiled, this in an ideal way of reusing your clubs.

Possum trouble no more. Just wire up your rotary clothes line.

A truly safety conscious use of a motorcycle helmet.

Moments of vernacular garden design from around Berowra. With the council cleanup coming up, I expect to see more suburban creativity soon.

Posted by

mccnmatt

Posted on

March 1, 2014

Posted under

Backyard chickens, Brassicas, Brush turkeys, Gardening, Native animals, Predators, raising chickens, Recycling, Vernacular architecture

A grand day out

Time to get the fully feathered chicks – all of 6 weeks old – out of the brooder in the kids’ bedroom. To my amazement the new coop, which weighs the same as a gas giant, does actually fit under the chook dome. After Donna’s departure, I’m a bit worried about plunging the peepers straight into the fowl-and-brush-turkey-ordure-rich environment of the run, so we’ll give them a few weeks in the chicken tractor, getting a garden bed ready for brassicas. They had a first scratch around this afternoon, ready for the big move tomorrow.

Andy is looking very miffed by these developments. I caught her lurking in the new coop – I think she envisages it as her own personal quarters. She was transfixed by the sudden appearance of the new girls, so I was able to grab her and turf her out before any argy-bargy. However, Snowball and Andy have been using the top of the dome as a perch, so they were wandering around the run at something of a loss at sundown tonight. They have a whole series of dry places to sleep – under the granny flat, in the wood-shed – but since they seemed to favour a spot underneath the neighbour’s horrible coral tree, we leaned a ladder (a previous craft project) against the outside of the woodshed, exactly where the chicken dome used to be. I tried to give Andy the idea but she wasn’t having it. Hope they are somewhere out of the rain tonight….