Maskeli Mavi Bülbül Larvivora brunnea

Male is slaty-blue with a white eyebrow, dark face, and orange underparts. Female is matte brown with buffy underparts; females in the Chin Hills have a slate-gray back. Furtive and skulky; male sings from deep cover, giving a series of sharp whistles devolving into a burst of trilling and chattering notes. Prefers dense, damp undergrowth in wet forests, often in proximity to streams and gullies.