Bird extinctions may quicken-Loss of habitat, warming, cats are all factors

Uh, the last time I noticed cats weren't threatened with extinction, were they?
A group of renowned biologists say if nothing's done, birds could go extinct 50 times faster, eliminating about 1,200 species by century's end.
The reasons: habitat destroyed by development, global warming and invasive species -- especially your cat.
"If we lose species -- parrots, toucans -- our world will be a poorer place," said Stuart Pimm, a conservation biologist at Duke University.
His fears are supported by a U.S. study, released just last week, that showed 30 North American shorebird species on pace to decline by 36 percent in the next 20 years.
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