The Flame-crested Tanager is an energetic bird (described as "spritely" by Isler and Isler 1999). When foraging, it "works along slender outer branches near dense foliage," where it "gleans or picks insects from leaves of all sizes, and makes short (01. m) sallies to leaves; also forages in vine tangles (Parker data)" (Isler and Isler 1999).
Little information; presumably is socially monogamous.
Social and interspecific behavior
Tachyphonus cristatus usually occurs in pairs, but sometimes travels in groups of up to 10 individuals (Isler and Isler 1999). It almost always is a member of canopy mixed species flocks (Hilty and Brown 1986, Ridgely and Tudor 1989, Hilty 2003). Flock associates at one study site in southern Venezuela included Gilded Barbet (Capito auratus), Spot-backed Antbird (Herpsilochmus dorsimaculatus), Gray Elaenia (Myiopagis caniceps), Purple-breasted Cotinga (Cotinga cotinga), White-browed Purpletuft (Iodopleura isabellae), Black-capped Becard (Pachyramphus marginatus), Guiana Gnatcatcher (Polioptila guianensis), Green Honeycreeper (Chlorophanes spiza), Purple Honeycreeper (Cyanerpes caeruleus), Short-billed Honeycreeper (Cyanerpes nitidus), Blue Dacnis (Dacnis cayana), Yellow-backed Tanager (Hemithraupis flavicollis), Palm Tanager (Thraupis palmarum), Opal-rumped Tanager (Tangara velia), and Rufous-bellied Euphonia (Euphonia rufiventris) (Walther 2004).