Butterflies and Climate Change

Are Butterfly numbers diminishing due to climate change?

Are there other reasons for their decline?

I believe they are declining in my area of Victoria.

It would be a catastrophe if we lost all but a handful of species
by the middle of this century.

Obviously, habitat loss and increase in temperature will be factors
affecting survival of Australia's butterfly populations.

http://www.monash.edu.au/news/newsline/story/1113