Dusky-throated Antshrike

The dusky-throated antshrike is 13 to 14 cm (5.1 to 5.5 in) long and weighs 16 to 19 g (0.56 to 0.67 oz). Adult males of the nominate subspecies are mostly darkish gray that is lighter on their belly. They sometimes have a small white patch between their scapulars and often some black feathers on their throat. Their wings and tail are darkish gray with small white tips on the tail feathers. Adult females have dark olive-brown upperparts with more rufous wings and tail. Their throat is buff-white and the rest of their underparts pale buffy ochraceous. Subspecies T. a. obidensis has a shorter tail than the nominate, a black throat, and sometimes some white on the wings.

The nominate subspecies of the dusky-throated antshrike is found east of the Andes from south-central and southeastern Colombia south through eastern Ecuador into eastern Peru and northeastern Bolivia and in far western Brazil's Acre state. Subspecies T. a. obidensis is found from eastern Colombia east through eastern and southern Venezuela and the Guianas, and in northern Brazil from the Rio Negro watershed to the Atlantic and south of the Amazon between the rios Tefé and Purus. The species primarily inhabits the understorey of terra firme evergreen forest and occurs less often in várzea forest. In elevation it reaches 1,050 m (3,400 ft) though only as high as 400 m (1,300 ft) in Colombia and is mostly below 500 m (1,600 ft) in Ecuador.

The dusky-throated antshrike's diet includes insects and other arthropods. It mostly forages singly, in pairs, and family groups and usually as part of a mixed-species feeding flock. It typically forages from the ground up to about 4 m (13 ft) above it but will feed as high as 10 m (33 ft). It usually captures prey with a sally from a perch to the underside of foliage, and sometimes from the foliage's top side, stems, or trunks. It also gleans while perched and drops to the ground to take prey there. It regularly attends army ant swarms.