Saturday 12 March 2011

Weird and Wonderful Critters

It isn't just the vertebrates that are worthy of attention here on the hill.  We often find invertebrates that are just plain weird (in wonderful ways).  Here are two examples from the world of beetles.  They bring to mind Darwin's statement that the Creator surely must have been inordinately fond of beetles.

You can click on the images to see an enlarged version or on the common names to go to relevant web sites.
This beastie is the Feather-horned Longicorn Beetle (Piesarthrius marginellus).  The larvae of most of the longicorn beetles (Family Cerambycidae) are woodborers.

Here's the Yellow-horned Clerid Beetle (Trogodendron fasciculatum).  The clerid beetles (Family Cleridae) are mainly predators on other insects (hence the substantial mandibles on this one.)

Thanks to the Queensland Museum Information Service for the preliminary identifications on the basis of these photographs.  And, by the way, Darwin thought the Creator must have been inordinately fond of beetles because he made so many of them (though there is some doubt as to whether Darwin ever said this)

Thursday 17 February 2011

Five weeks since the floods

It is five weeks since the floods in the Lockyer Valley that destroyed parts of Grantham and Murphys Creek.  The scars are still raw - particularly on the community but also on the landscape.  The road through Grantham just opened a few days ago; before that it had been closed to all other than local residents, emergency services and volunteers.  Driving through there the first time is like a kick in the stomach, even after seeing all the media coverage.

Of course I'm not going to photograph Grantham or Murphy's Creek, but here are some photos of one of the bridges over the Lockyer Creek where it passes through the outskirts of Gatton - quite a way downstream from Grantham.

Davies Bridge, the road bridge we cross on our way into Gatton, is visible under the middle arch of the railway bridge - the highway barriers give it away.  In the worst recent flooding (in 1974) the water came up to the blue mark that you might just make out on far side of the left-hand column in this photo.  In January I'm told that the water came up to the beams under the railway line.

The photo below shows the state of the bridge today, looking from the upstream side.  None of the large scour in the background was there before the flood, that whole huge scoop out of the bank was done by the rushing water which at this point was well above the sandy area in the middle top of the photo.

On the downstream side quite a bit of the foundation of the bridge seems to have gone, and the scour in the photo above was eating back into the bank under the road.
I'll try to get some photos of the other two bridges into Gatton, and of other parts of the Lockyer Creek in the next week or so.

Tuesday 15 February 2011

Finished the "trim" work inside the house

Well, finally finished the "trim" work inside the house - architraves around the windows and door, skirting on the bottoms of the walls, and the tile splashback across the backs of the kitchen benches.  Oh, and quite a bit of remedial work on the plywood lining on the walls where it had buckled due to the very damp air over the last couple of months.

Probably easier to explain in photos than in words.

Here's the complex bridge between the benches behind the stove, for something to rest the tiles on while the glue was drying.

More tiles, and an example of the architraves that I put around the windows and door.  The bench tops are recycled Australian hardwood timber (Red Ironbark).

And the skirting, around all of the walls.

We had the final plumbing inspection today - think it went OK.  The final inspection for the other aspects is tomorrow.  Fingers crossed.

Friday 4 February 2011

Can a snake climb a wall?

Do you think a snake can climb a wall? Even a vertical corrugated iron wall?

Well, this morning I was enjoying a cup of tea and reading the news when I heard one of our tree frogs give a quiet croak. Nothing unusual there, they croak like that if they think it might rain, or if they hear something that sounds like distant thunder.

Then it croaked again, a little louder, and sort of "insistent". Still nothing unusual - the day was heating up, and the frog sounded like it was on the outside of the wall of the house somewhere, so it was probably getting quite warm. And that sort of plaintive distress call is their way of saying, "Don't like this, but there aren't any options I can think of".

A bit later it croaked again, louder and more distressed. Hmmm.... not so good, but probably just the heat. Again, louder, more distressed, then another call and another. Frog in trouble. More precisely, frog being attacked by a snake. We hear it regularly here, and if we are quick enough we can save the frog from being eaten. Not that we want to deprive the snake of its meals, but they get plent of frogs when we can't hear, or when they are on the roof and there is nothing we can do about it. and anyway, the stupid snakes often try to eat the fully grown tree frogs, and that they can't do, so the frog just gets carved up by the snake's fangs, not to mention terribly agitated.

So I rushed out to see what was going on. I went along the side of the house, looking on the ground, because I really didn't expect to see the snake up the wall of the house, and I've never seen one up in the rafters under the eaves - just doesn't seem possible for them to get there. So there I was, walking along the gravel beside the wall, looking into the longish grass near my feet, trying to see frog or snake. Suddenly, a movement out of the corner or my eye, in fact right at eye height, on the wall of the house! I jumped back, turning as I did so. There was the snake above me, flat against the vertical wall, beside the window, with its head pushing into the gutter where the wall meets the top of the window. Clearly there was a frog in there.

When it realised how close I was the snake started trying to climb the wall. Here's what it looked like.
Using the corrugations in the wall as a measure, that snake is at least 1.3 metres long, and probably 1.5 metres.  Except where it is supporting the top part of its body on the top of the window, it is held on the wall only by the bits of its tail jammed between the iron and the window frame and any friction from its scales on the corrugations.  And in fact when I first saw it, that was all that it had to hold itself in place - none of it was resting on the top of the window at that stage.

The lowest part of its tail is 1.6 metres off the ground, so it had to get up there the same way, jamming curves in its body into the space between the corrugation and the window frame.  Sort of like a rock climber doing finger jams to hold themselves on a vertical face with their fingers in a crack and the friction of their feet pressed against the rock face.

It's been quite a time for reptiles, particularly these tree snakes.  Our neighbour John and I were sitting having a cup of tea outside the office a week ago, and a tree snake (mabye this one) went past us and climbed into the carob tree by the bird bath.  Two days later I was watching TV in the evening when I became aware of something watching me.  A green tree snake was resting its head on the top of the TV, staring at me.  Silly me tried to shoo it outside with a broom but of course that panicked it and it slithered off to find a hiding place, so I had to finish my TV viewing knowing that the snake was still somewhere close by.

About ten days before that I nearly stepped on a big green tree snake, possibly as long as the one on the wall today, on the track down near the creek crossing.  That one got as much of a fright as I did, and reared up to threaten me - they are full of bluff, but it is very unusual for them to try to strike - and anyway they are harmless.  Here's the photo I got of that one.  You can see the blue skin starting to show between the scales. When they are really threatened they inflate their bodies much further so that there is a large area of this iridescent blue sking showing - quite confronting.
The other recent reptile experience that comes to mind is the Water Dragon that was watching me pull out weeds down by the creek crossing when the creek was running strongly in January.  We see very few of these here - maybe becasue there isn't usually any water in the creeks - but they are beautiful animals, and this one was in full colour.

Monday 31 January 2011

Links to satellite views of our weather

These are real time satellite views of aspects of weather systems in our area:

 This link shows weather systems in Australia and nearby seas.

This link takes you to rainfall happening in Australia and seas to the east.

And this one takes you to a lightning strikes and weather events in Queensland.

The links should open in a new tab or a new window - the first two might take a while to load, they contain a lot of image information. I tried to put these under the "Links" heading in the column to the right, with our weather forecast links, but for some reason they don't work there.

Sunday 23 January 2011

Camera Trap Results

We have been using the camera trap for a couple of years now, and have caught a range of targets, including foxes, birds and (mostly) wallabies (and occasionally some unsuspecting visitors).

I set the camera on a tree near the sandy bend in the track a couple of weeks ago because I kept seeing deer, pig and fox signs there.  Just retrieved it today and at least the deer were cooperative.

The trap uses an infra-red flash when it is triggered at night.  Here are two deer (well, one and a half) moving down the track.
Apart from this one night time shot, they seem to be on the track in the early morning and early evening.
Is the one below the same as the one above?  Hard to tell because of the different angle and the different lighting, but I think it's probably the same one.
In the shot below (taken this morning) there's another deer off to the left of the track, just above the left ear of the one on the track.  That one looks to me to be larger than any of the ones photogaphed on the track, so maybe at least three different animals.

I'll reset the trap in the morning in much the same place and see what comes along.

Friday 21 January 2011

Climate Change - Should We Take Action or Not?

Check this video.  This guy has a really clear way of presenting the options.  His first video on climate change has had 7,200,000 viewings until now, and this one which has only been around for a short time has already had over one million viewings.

No matter what your opinion on climate change, it is worth watching.



Please pass the link on to others to help them to make up their own minds on what their postion is going to be [ http://www.youtube.com/watch?v=mF_anaVcCXg&feature=player_embedded#! ]

Wednesday 19 January 2011

Current State of the House

Here are some shots of the outside of the house in its present stage of construction - not much more to do on the outside, and most of it will be unnoticeable, i.e. it won't look much different to this.

Here's the view of the north side - note the large windows extending down quite low and the wide eaves (one metre), both features that contribute to the passive solar design.
The gravel around the base of the walls fulfills two functions: discourgages termites (under the gravel is a layer of compacted crusher dust, topped with black plastic); prevents vegetation growing near the walls and windows (for fire hazard reduction and to deter termites).

The western side is toward the workshop and two of the tanks.
That's the evacuated tube solar hot water system on the roof.  Running on only 13 of its 24 tubes because that's all it needs in summer.  The tanks are stainless steel, with 22,500 litre capacity in each.

Here's a view from the south, with the workshop to the west of the house - providing some protection from westerly winds in winter and from radiant heat from bushfires.
No views of the interior yet - it is currently in chaos as I'm working simultaneously on window architraves, skirting, and the splashback for the kitchen benches.  The workshop is similarly in chaos, with painted timber drying everywhere.
One day it will all be finished.

Monday 17 January 2011

The Creek Crossing Revisited

Took a walk down to the creek crossing this afternoon - what an amazing change from six days ago (see the video two posts back).  But it isn't pretty, and I won't be driving across it any time soon.

Here's what it was like on the 11th of January:
and here's what it's like today:
If it helps, the photos are taken from opposite sides of the crossing.  In the last one, the track to the house is in the middle left of the photo.  In the earlier one, the track to the road is in the middle top of the photo.

Clearly a huge amount of rock has been eroded away, though it is impressive that so much of the foundation of the crossing remains, even in the gully carved into the crossing against the far bank.  Bernie (our earth-works magician) did a great job on this crossing.

Parts of the rest of the track were a bit knocked around too.  Here's the section that I repaired so painstakingly back after Christmas - the rocks in the erosion gullies represent about seven hours' work with a wheelbarrow.
The flowing water has scoured out around the repair on the right.  But what isn't so evident is that the erosion gullies have been extended several metres at the top of the photo.  Living on a hill has its advantages (e.g. no floods) and it's disadvantages (e.g. needs a cross-country access track that has to be maintained).  Oh well....

Wednesday 12 January 2011

TALENT!

I'm experimenting with the format of this blog (if anyone out there is watching or cares) so just be patient while I exercise my limited artistic and layout skills and try to learn how this "blogger" thingy works.

And while I'm at it I may as well experiment a bit with content too (see below), and add a new link to our weather (see in Links below right ) that not only gives the forecast but also the current conditions and details of past weather.  I've also added a link to our local weather radar.

I'm indebted to Grumpy Old Ken for the following example of Talent with a capital T.  What an amazing person this artist is - and what an amazing art medium and performance technology.  Enjoy!

Tuesday 11 January 2011

It's WET here.

 Well, it is nearly a year since the last posting on this blog.  For a blog that was supposed to keep family and friends informed of what we have been up to it has not been very successful.  That is my fault - too many other things getting priority.

Right now, though, I just want to share with you the flood situation here.

We, of course don't have a flood, being on top of a hill, though there is so much rain that the water can't get away fast enough and is often running in shallow sheets across the ground.  But nothing like other people in the Lockyer Valley and Toowoomba, who have experienced the worst, most destructive floods on record on this area - and some of the most destructive, if not the most destructive, in Australian history.

Here we have had 321mm of rain in the first 11 days of January, which is 71% of the highest January rainfall ever recorded in Gatton since records began in 1897, so it looks like we might be breaking some records again this month (December was the wettest December on record here, and 2010 was the wettest year (by more than 200mm).  Of course our rainfall might be different to the rainfall recorded down in the valley where the official weather station is, but I'm pretty sure that they broke all records there too.

Our front and back creek crossings are currently under water; the back one has been under water more often than not since early December.  There is no way out until the water goes down, however right now that doesn't matter - if I got out onto the road there would be nowhere to go.  All the bridges between us and the rest of the world (Gatton, Brisbbane, Toowoomba) are flooded and impassable.

At present that isn't a problem.  I have about a month's supply of food, and of course we are self-sufficient in electricity and water, so it is no great hardship to just stay here and potter along with jobs to finish the house (those jobs that can be done while it is bucketing down raining).

Here's what our back creek crossing looked like at about 1430 this afternoon.
All for now.