Researchers for the Wildlife Conservation Society have discovered for the first time the breeding area of the large-billed reed warbler—dubbed in 2007 as "the world's least known bird species"—in the remote and rugged Wakhan Corridor of the Pamir Mountains of north-eastern Afghanistan.
Using a combination of astute field observations, museum specimens, DNA sequencing, and the first known audio recording of the species, researchers verified the discovery by capturing and releasing almost 20 birds earlier this year, the largest number ever recorded.