It's not every day that scientists identify a brand new species of mammal. Rarer still is a confirmed discovery of a new species of primate — the mammalian order that encompasses humans, monkeys and apes. Now, for only the second time in 28 years, a new species of monkey has been identified in Africa.
If you were asked to classify every species of vertebrate living in a given environmental niche, how would you go about doing it? For years, ecologists have risen to this task by resorting to brute force — tracking, trapping, and tagging individual animals to extrapolate species population data.