A small endemic songbird found only on the North Island of New Zealand. Note distinctive whitish head and underparts. Females and juveniles have cinnamon tinge to crown and nape. Often encountered in small feeding flocks that move quickly and loudly through the canopy with harsh chattering calls, trills, and slurs. Favors tall native forest and shrubs. Although a reluctant flier, the species is agile and acrobatic as it forages for insects, often hanging upside down. Male has a clear canary-like song. Adults can be seen feeding far larger Long-tailed Koel chicks, as this species is a favored host of that nest parasite.