Named the “limestone leaf warbler” because it breeds in Laos’ limestone karst environments - a region known for unusual wildlife- 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.

Scientists presume there are many limestone leaf warblers in this region, but its habitat isn’t without threats. Many parts of the species’ native forests have been cleared as a result of wood collection. NGOs are continuing to work with the Lao Government in an effort to reduce the threats to wildlife in this region.