The grandmother of all hockey sticks?: Given that we have no evidence that trace amounts of CO2 have ever killed off a single tropical bird species, should we really believe it might kill off 2,500 tropical bird species in the next 88 years?

Birders beware: climate change could push 600 tropical birds into extinction

There may be less birds for birders to see in the world as the planet warms. Climate change, in combination with deforestation, could send between 100 and 2,500 tropical birds to extinction before the end of century, according to new research published in Biological Conservation. The wide range depends on the extent of climate and how much habitat is lost, but researchers say the most likely range of extinctions is between 600 and 900 species, meaning about 10-14 percent of tropical birds, excluding migratory species.