This is common behaviour, particularly in winter, in Canberra. Most
traffic lights in Canberra are still pre-LED and therefore would emit
a lot of heat.
John Leonard
On 03/02/2008, Andrew Taylor <> wrote:
> On Sun, Feb 03, 2008 at 10:46:27AM +1100, Harry Clarke wrote:
> > Maybe bird vision doesn't react to red light but I thought the heat would
> > drive most avian life away.
>
> They should be able to see the red light - I don't know about Mynas but
> birds generally have more elaborate color vision than we do. At least
> in Sydney, red traffic lights switched some years ago to LEDs. Its an
> application LEDs are particularly well suited reducing power consumption
> by 5-10x and with significiantly longer long lifetime. An unintended
> consequence could well be 5-10x less heating of a Mynah nest.
>
> Andrew
>
>
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--
John Leonard
Canberra
Australia
www.jleonard.net
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