Black-faced Antthrush

The Black-faced Antthrush is a chunky, terrestrial member of the antthrush family (Formicariidae), built more like a small rail or tinamou than a typical songbird, with a rounded body, long legs, and a short, frequently cocked tail. Plumage is rich olive-brown above with a contrasting black face and throat and gray underparts. It walks deliberately across the forest floor rather than hopping, often stopping to flick its tail upward.

Although easily overlooked in the dim forest interior, its clear, whistled song is one of the characteristic sounds of lowland Neotropical rainforest.

Key field marks

• Chunky, short-tailed, long-legged silhouette on the forest floor.
• Black face and throat contrasting with olive-brown upperparts and gray underparts.
• Frequent tail-cocking while walking.

Similar species

Other antthrushes have different face patterns (e.g., rufous or gray faces) and largely non-overlapping ranges or habitats. The combination of ground-walking behavior, black face, and cocked tail is distinctive within its range; it is far more often identified by voice than sight.

This species inhabits the floor of humid lowland and (locally) foothill evergreen forest from southern Mexico through Central America and across much of Amazonia to Bolivia and Brazil, generally below about 1,200 m. It is a non-migratory resident that keeps to shaded forest interior and rarely ventures into open or disturbed habitat.

Voice

The song is a series of clear, evenly spaced, far-carrying whistled notes, often given at dawn and dusk; the ventriloquial quality makes the singing bird difficult to pinpoint.

Feeding

Black-faced Antthrushes walk steadily across the leaf litter, turning over leaves and probing debris for insects, spiders, and other invertebrates; they associate with army ant swarms only opportunistically rather than as obligate followers.

Nesting and breeding

Nests are built in cavities such as low tree stumps, banks, or hollow logs rather than open cups. Both parents are believed to share incubation and care of the young, which are notably precocial-looking with dark, sooty down.