Common and often noisy and conspicuous little bird of temperate southern forests, also ranging locally into matorral with taller trees. Found in pairs or small groups, at times flocks of tens in the nonbreeding season. Moves actively through foliage from canopy to low in thickets, even on the ground in leaf litter. Thorn-tailed Rayaditos are the core species in mixed-species winter feeding flocks. Plumage distinctive, with thick golden eyebrow, whitish bib (bib buffy on Chiloé Island), striped wings, and “thorny-tipped” tail.