New rare bird species discovered in Japan
Researchers have identified a previously unknown species of leaf warbler in Japan. Once thought to be a single species, Ijima’s Leaf Warbler, has now been revealed to consist of two: Ijima’s Leaf Warbler and the Tokara Leaf Warbler. It is not their appearance that primarily distinguishes them, but analyses of their DNA and song. The researchers are calling for them to be classified as vulnerable.