ススイロアリドリ Hafferia fortis

Large, chunky antbird. Male is uniformly sooty black with pale blue skin around the eye. Female is warm dark brown above and gray below, and also has blue skin around the eye. Occurs in pairs in the understory of mature lowland forest in the Amazon basin, east of the Andes. Can be seen in the vicinity of army ant swarms. Look for the tail being pumped down and raised slowly up.