A small quiet bird with a distinctly silky, smooth-feathered appearance. Pale below and warm soft brown above with a black crescent above the eye and a glossy blue patch on the dark wings. Usually moves around through the middle layers of foothill and montane forest. Does not often join mixed-species foraging flocks, instead tending to stick to medium-sized groups of its own species. Gives a smooth, fluid ‘tee-LEE!’