Large, red-bellied trogon of humid tropical lowlands. Favors rainforest interior, but also found at edges and around clearings, mainly perched quietly and in an upright position at middle to upper levels in larger trees. Lack of white band above the red belly and entirely dark gray undertail (or with a few fine white bars at the sides on immatures) separate Slaty-tailed from other red-bellied trogons. On males also note the stout orange bill and orange eyering. Digs its nest in arboreal termite nests.