Jun 04

Laid Off

It seems that it’s the time of the year (at least here in Oz) when the chooks go sulky and turn their attention to moulting and looking like they’ve been put through the spin-cycle. Yep, I only got 5 eggs in May, from four chooks, and it seems I’m not the only one. My mate Gavin over at “The Greening of Gavin” is also bemoaning the fact that his chooks have gone off the lay.

Chooks will slow down as they get older but the eggs will get bigger. When they are more than two years old they will almost never lay during winter. After four years they really slow down even in summer..

If you want fresh eggs all year round, the trick is to keep a rotation going. Buy point-of-lay chooks in Autumn and they will lay through the first winter and often through the second winter (although much fewer eggs). When the first lot reach two years old, buy a few more and retire the slowest from the originals (more on this shortly). The following autumn replace the last of the originals with some new ones. Then every year after that just keep the rotation going. That way you will always have chickens laying through winter and some chickens slowing down through the following summer.

For example we usually keep between four and six chickens and this is how we started

year New 1 Year Old 2 Years Old 3 or More Years old Total
1 4 4
2 0 4 4
3 2 0 4 6
4 2 2 0 2 to 4 (see text) 6 to 8
5+ 2 2 0 to 2 (see text) 0 to 2 (see text) 4 to 8

Depending on how things are going we don’t always replace some every year, but usually we do. Now, as my brood were getting a little older and I didn’t replace any last year, I knew I need to get some new recruits to fill the gap this winter. So I bought two new chooks and waited and waited but they didn’t lay and then one of the old chooks promptly turned her claws up. Still no eggs so, since we had a new person in the house who also likes eggs, I thought let’s buy another 2 and see which are the better layers. I now have 7 (all Isa Browns at the moment) and the new ones were just starting to lay before I went away for a few weeks. It will be interesting to see how they’re going when I get back because I have a sneaking suspicion that I might have an egg eater amongst them. I hope not, because if I can’t find it in time, and the others learn from the egg thief, I may have to replace all of them.

Now, you may have realised that chooks seem to be regularly vanishing from my flock. How does this happen? Well, chooks do die through natural causes, sometimes suddenly and for no apparent reason. Sometimes they get sick and then die although this should happen rarely. I have had the occasional fox get in and rip though the lot, but not for several years. I have even had the odd one fly the coop, literally, and vanish into the great unknown. But, as you have probably guessed, they also end up in the pot.

I have no problem dispatching a chook and turning it into soup or broth, but I know this puts some people off. Many people keep chooks well past their prime (in terms of egg laying) and treat them as loving pets and part of the family. They do make very good pets and are a joy to have in the garden. If that is your preference that’s fine but you will have to develop a different strategy if you want a regular supply of fresh eggs.

One final point, if you are going to eat them, don’t bother trying to roast or fry them. Once they are old enough to lay, they are already too old and tough. They are also relatively small and scrawny unless you get a mixed breed (ie meat and egg producer).

Jun 03

Energy in Timor Leste

As you know, I’m currently in Timor Leste delivering some Solar PV training as part of a Mercy Corps’ program for expanding Solar PV installation and maintenance businesses into remote communities.

You can find out more about Mercy Corps here www.mercycorps.org and here www.mercycorpsnw.org

It’s one of a number of great Solar PV programs, including the volunteer work through the ATA (Alternative Technology Association) that are helping to provide lighting and power to remote communities.

But energy is more than just solar and many groups including Mercy Corp are also looking at cooking alternatives to the classic and inefficient three stone fire and the problems associated with using wood as a cooking fuel.

The key problems with this style of cooking are that it is

  1. very inefficient and that means more firewood has to be collected or purchased and
  2. produces a large amount of smoke and pollution that caused all sorts of health problems mainly to women and children

I have had an interest in this area for a while and I have built a few solar cookers and even given classes on building them. But I had never seen some of the efficient cookstoves up close and personal. So I was very excited to see some examples of the “Rocket” stoves and the moulds for making them at the Mercy Corps office.

 

 

 

 

 

 

 

 

They are a clever design that concentrates the fire  in a constrained space with a high flue. The pot sits on top of the flue. This design encourages the cook to use smaller pieces of wood while the flue generates a strong updraft that increases airflow. This makes the wood burn very hot with no smoke and all the heat goes up towards the pot. That helps eliminate both key problems.

I’m hoping to see them in action and maybe have a play
(I mean field test 😉 ).

 

While we’re talking about energy and self reliance in Timor Leste, this article is also a very interesting read. http://www.futurity.org/earth-environment/australia-owes-east-timor-climate-aid-says-study/

As it says in the article

“The legacy of several hundred years of outside occupation has led to a situation where Timor is grossly underdeveloped through no fault of its own,” finds a report by Jeremy Moss from the University of Melbourne’s Nossal Institute of Global Health”…“Timor Leste should not have to bear the cost associated with global mitigation efforts,”

Jun 01

Timor Leste

I’m currently in Timor Leste (East Timor) doing some training and support for Solar PV installations in remote communities. It’s been eight months since I was last here and the changes in preparation for the recent 10 year independence celebrations have been quite pronounced. Particularly along the foreshore.


 

 

 

 

This is a very impressive public space and if you look very closely in the picture on the right you can see the free electricity access point for people with laptops and music equipment.

But the place for me today was one of the markets for some fresh fruit and veggies for lunch.

 

 

 

 

 

 

A wide selection of fruits and vegetables on display for sale. I have no idea what those purple things are!

 

Oooh! those chillies look Hot! But not for me today.

I need to be focussed for my meetings this afternoon at the training centre.

 

 

And for those from out of town one of the many buses waiting next to the market being given a good cleaning by the driver.

 

 

 

That’ll do for now, on this rather slow connection, but I’ll have some more updates over the next few weeks.

Jun 01

The Magic Pumpkin

Is there no end to this magic pumpkin?!

A quick montage of the pumpkin turning into pumpkin soup (with the help of some carrots, garlic and herbs from the garden and some other things from other gardens)

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May 09

Climate Change – A Mini Rant

The following is a short edited extract of my response in a forum to a particularly irritating denialist/climate-skeptic (note that a climate-skeptic is not a true sceptic, just a denialist in disguise).

Why am I sharing this? Well, partly to get it off my chest and out to wider audience, but also because it  very succinctly explains, in my mind at least, the core elements of the climate change impact. That is, putting CO2 into the atmosphere at the rate we are doing it will cause the climate to swing wildly for a long time before it settles to a new level. It doesn’t sound that different to the way many people describe it, but, for some reason, explained in this way, at a high level, but with an engineering slant, really resonated with me (maybe because I’m an engineer)

————

Everybody ackowleges that the long term climate contains natural cycles. These cycles have been documented and studied for some time and our knowledge of them is continually improving. I’m sure that David does understand these cycles very well given the kind of work has has done in the past and in his current efforts working to predict longer term weather patterns (or very short term climate changes – depending on your point of view).

There has also been a good deal of work and understanding of the scope of CO2 emmissions, particularly anthroprogenic emmssions, and the role CO2 has on climate. Our knowledge and understanding on this aspect has also increased and we have confidence in our ability to  predict the effects of changing the CO2 levels in the atmosphere.

Further, the modelling that has, and is, being done around the world has taken both these elements into account when prediciting changes in global temperatures.

There are a range of opinions about whether the anthropogenic forcing is significant or not. Many of those positions, especially those at both extremes, are based more on hope or fear than of good science. However, the modelling thus far ,clearly shows that anthroprogenic forcing is significant and will drive temperatures higher over the medium to longer term and cause more severe climate fluctuations than would otherwise occur.

If you look at the climate record you can see that it behaves as a complex underdamped system with very long settling time. The anthropogenic forcing appears essentially as a step function imposed on this underdamped system and it will cause wild oscillations for a considerable time before it settles at a new level.

Transient response to a step change

 

I, for one, do not want to see these oscillations, as they will likely wreak havoc on the systems and environments that we rely on for survival.

If someone can show me that this is not the case and that the climate is not starting to exhibit a transient response to this forcing, then I am all ears.

 

 

To date, no one has.