Hafferia fortis
The Sooty Antbird (Hafferia fortis) is a robust, medium-sized passerine, typically measuring 18-20 cm (7.1-7.9 in) in length and weighing 40-50 g. Males are uniformly dark sooty-gray to blackish, appearing almost entirely black in the dim forest understory, while females exhibit a slightly paler or brownish tinge, sometimes with an olive wash, making them subtly distinct. A key field mark for identification, particularly in males, is the striking pale blue-white bare orbital skin or eye-ring,...
This species primarily inhabits humid lowland and foothill evergreen forests, including terra firme and occasionally várzea forest, typically found in the understory and lower mid-story. It thrives at elevations ranging from sea level up to 1,300 meters (4,300 ft), sometimes higher.
Primarily insectivorous, feeding on a variety of insects (such as beetles, cockroaches, crickets, and grasshoppers) and other arthropods (like spiders) that are flushed from the forest floor by army ant swarms.
The Sooty Antbird is a diurnal species, active within the dense understory of tropical forests, typically roosting inconspicuously in thick foliage. Its foraging strategy is highly specialized, being an obligate or semi-obligate follower of army ant (e.g., *Eciton burchellii*) swarms. It position...
The Sooty Antbird is endemic to the western Amazon basin and adjacent Andean foothills in South America. Its primary range extends across southwestern Colombia, eastern Ecuador, and northeastern Peru, with a disjunct population in southeastern Peru and northwestern Bolivia. The nominate subspecie...
Least Concern
- The Sooty Antbird is considered an 'obligate ant-follower,' meaning it relies almost entirely on army ant swarms to flush out its prey, a highly specialized foraging niche. - Its scientific name, *fortis*, means 'strong' or 'brave' in Latin, perhaps referencing its robust build or its fearlessn...