FORBES - Humans driving extinctions is nothing new. In North America, humans are likely responsible for the loss of ice age era mammoths and mastodons. in South America, humans — alongside climate change — led to the loss of many species, including giant ground slots. And, of course, we are currently driving the planet’s sixth mass extinction. Now, a new study suggests that humans settling on the Bahamas 1,000 years ago is directly tied to the local extinction of certain birds.