Limestone Leaf-Warbler (Phylloscopus Calciatilis)
In January 2010, a small, distinctive bird living in the rocky forests of the Annamite mountain range in Laos and Vietnam was described for the first time. it is similar to other warblers in this area of Southeast Asia, except for its distinct vocalizations and slight morphological differences. The tiny bird is greenish-olive with a yellow breast and striped crown. It has a loud and unique call, which is what first alerted the researchers that the bird may be new to science.