The Ruby-crowned Tanager is an inhabitant of open woodland and forest edge from the Atlantic Coast of Brazil west to Paraguay and south to Argentina. The male Ruby-crowned Tanager is a handsome all black bird with a white interscapular patch. While displaying males raise their hidden ruby red crest. Females are reddish brown above with a gray head, white throat and cinnamon underparts. Usually seen singly or in small groups, Ruby-crowned Tanagers forage from midheights to the upper canopy, moving restlessly from tree to tree and habitually flicking their wings. The diet of Ruby-crowned Tanagers consists mainly of fruit and insects, and at times these birds can be observed following army ant swarms.