buff-sided robin Poecilodryas cerviniventris

Small round songbird found in heavy vegetation along creeks and thick wet forest, including bamboo clumps, of northern-central Australia. Brown above, pale below, with broad white supercilium, dark ear coverts, peachy-rufous flanks and undertail, and white markings in wing and tail. Usually carries tail cocked upright. Compare White-browed Robin, which is completely white underneath (and note range). Vocalizations include pleasant, repeated soft whistle (with 3-5 notes) and a sharper whistled call.