A somberly-colored robin which breeds in dense bamboo thickets. Male is slate-gray above (only a hint of blue may be detected in good lighting) with a white belly and black bib. Female is brown with a paler belly and a rusty-brown tail. Forages on the ground and in low bushes like most other small robins. Shy, usually keeping close to cover. Song is a series of distinct, separated phrases consisting of bright fluid warbling, high buzzy trills, and buzzy warbling.