The Brown Gerygone is a small bird, olive-grey (race richmondi, in south) to buff-brown (race mouki, in north) above, with a pale grey face and underparts, with the flanks washed brown. It has a long white eyebrow and a red-brown eye. The tail band is dark and the tail tips are white. It is usually seen in pairs or small parties, fluttering around foliage. Also known as the Brown Warbler.