Tiny, short-tailed bird with a thin, slightly upturned bill. Yellow eyering in all plumages, but different subspecies vary tremendously in plumage, ranging from black-headed to white-headed, streaked and unstreaked; in flight all, show prominent pale wingstripe. Inhabits woodlands, where usually seen in small flocks that methodically clamber along tree trunks, probing for insects in bark. Birds give frequent “chip-chip” call as they forage.