Small black-and-white flycatcher found in wetter forests of northern Cape York. Completely white underparts, with black mask, tail, and wings, blue eyering, and back back with white band. Rear of head has large puffy white collar (like a space helmet). Compare Pied Monarch, which has a broad black breast band. Forages treecreeper-style, moving up and down tree trunks looking for insects in the bark. Calls include repeated nasal buzzing sounds.