Sitta azurea Lesson, 1830
This is an unmistakable species, which forages and generally behaves just like Sitta frontalis (D.R. Wells pers. comm.). The pattern on its wings slightly resembles that of Sitta formosa which seems to link it to this genus, but in its overall blackish and white coloration it is very distinct from other Asian nuthatches. A comparison of its DNA should include a non-sittid sittella from Australasia.