Figbird breeding in Victoria

["Graham Turner" <>]

"... but it started decades too early for anthropogenic climate change to be 
an explanation (not that Mike suggested this)."
How do you reach this conclusion? My understanding is that there have been 
long slow changes in climate since the industrial revolution and the 
increasing use of fossil fuels for industry etc. I am happy to agree that 
there may no anthropogenic influence on the southward movement of this (and 
other birds species), however just because  anthropogenic climate change was 
not an issue that the populace was aware of does not mean it was not 
occurring.
Cheers
Graham Turner