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Showing posts with label sydney. Show all posts
Showing posts with label sydney. Show all posts

Monday, October 14, 2019

The Droughts are Coming...

Droughts are among the most costly natural disasters, affecting agriculture, ecosystems and societies. A study found that climate change has been impacting drought risk in the world since 1900. All the models are projecting that one should see unprecedented drying soon, in a lot of places.

Although it is floods that grab the headlines and trigger aid quickly, droughts have “shockingly large and often hidden” impacts that can last for generations, the world bank said in a report.

Girls in rural Africa born during a severe drought are more likely to grow up poor and hungry, be less educated, stunted, wed younger, give birth to underweight babies and bear more of them, the bank said.

This is an example of a poverty trap that has been created by a single episode of drought … and it continues across generations.

Nor are cities – the economic engines of most countries – immune from drought. The economic impact of droughts on city businesses is four times worse than that of floods.

Urban economies slow because of power outages, weak sales and increased health problems such as diarrhoea and dysentery.

Large swathes of eastern Australia have been in drought for periods ranging from a year to seven years.

Australia's biggest city Sydney is running down its water supply at the fastest rate on record. The amount of water flowing into the dam was just 10% of what it was a year ago. Catchments that have been historically reliable are now facing a critical shortage of water. A recent survey of Sydney residents found that despite the dry conditions and declining water supply, 47% of people did not realise there was a drought.

Saturday, April 21, 2018

Birds have Personalities !

I read some surprising articles on birds... one study showed that birds can have distinct personalities – some are aggressive, exploratory, while some are shy and afraid.. their stress levels when faced with an unfamiliar object in their environment were measured and co-related to different personality types – the fearful birds had high stress levels, and the adventurous ones had lower stress levels !

Attribution: Simon Carey
Empathy, or “feeling another’s pain”, has long been thought to be the providence of humans and, according to some research, other mammals. In an experiment, Domestic hens were separated from their chicks but allowed to observe that puffs of air were being directed at the youngsters.  The hens became very alert, ceased preening, and began vocalizing at their chicks.  They also exhibited physiological changes, including a drop in eye temperature and a rise in heart-rate…both signs of stress.

The author of the article writes that this new information raises the possibility that empathy, as a trait, may have evolved far earlier than was previously believed.  Its presence in birds opens the door to intriguing questions…according to one biologist, we may be looking at a 200 million year old characteristic that is rooted in reptile evolution. So will we next be looking at empathetic reptiles ?!

Attribution : https://commons.wikimedia.org/
wiki/File:Zebra_finch.jpg
And in the last study I read, Researchers found that birds expressing strong personality traits, such as aggressive behaviour or a willingness to explore, did a much better job of raising young if they had a like-minded partner. Where couples were markedly different in personality, chicks didn’t fare as well – being less well-fed and in poorer condition. The study found that if birds were highly exploratory and their partners shared that trait, their offspring were in really good condition. It was the same for highly aggressive birds. If only one parent showed the trait, the chicks fared less well.
Attribution : https://commons.wikimedia.org/wiki/
File:Trichoglossus_moluccanus_with_open_wings,_Brisbane.jpg
In a comment below one of the articles was this touching story :

I used to feed wild rainbow lorikeets in Sydney and can give an example of these birds displaying empathy.
One of the birds that I used to feed only had the top part of his beak. I would provide him with a soft feed mix because he could not eat apples like the others. I fed him for about 7 years. One time after not visiting for a few days he arrived with another lorriket that I had not seen before and this bird too only had half a beak. I was blown away that he was looking out for another with the same problem he had.rsonality