Birds
Ocellated Antbird
Phaenostictus mcleannani · also called ocellated antbirds
Claiming the best position directly above an advancing army ant swarm, an ocellated antbird pushes smaller rivals aside, its bright blue bare face and spotted plumage marking it as the undisputed dominant species at nearly every ant-following gathering it joins.
Overview
The ocellated antbird, Phaenostictus mcleannani, is the socially dominant species among birds that follow army ant swarms, native to rainforest habitat across a range extending from Central America into parts of northern South America. Its striking spotted plumage, vivid bare blue facial skin, and status as a reliable indicator of healthy, undisturbed rainforest make it one of the more ecologically significant and visually distinctive antbirds found anywhere in the Neotropics.
The undisputed ruler of the ant swarm
At every army ant swarm it joins, the ocellated antbird typically claims the prime feeding positions for itself, a social dominance that has made it one of the most reliably observed species in the entire ant-following bird community whenever a swarm passes through.
Status
Near Threatened, having declined in parts of its range due to forest fragmentation and degradation reducing the large territories with active army ant colonies it depends on.
Ocellated Antbird: common questions
Why is the ocellated antbird considered dominant at ant swarms?
This species is the socially dominant bird species at army ant swarms it attends, typically displacing smaller antbird species such as the bicolored antbird from the best feeding positions closest to the advancing ants, a hierarchy well documented among the birds that follow these swarms.
Why is the ocellated antbird named that?
This species has a plumage pattern marked with distinct dark spots resembling small eyes, known as ocelli, a feature that gives the species both its common name and its scientific name, referencing this spotted appearance.
Why is the ocellated antbird considered an indicator of forest health?
This species is considered a useful indicator of healthy, undisturbed rainforest, since its reliance on large territories containing active army ant colonies makes it particularly sensitive to forest degradation and fragmentation compared with more adaptable bird species.
Does the ocellated antbird only eat food from ant swarms?
Not entirely; this species relies heavily on army ant swarms for foraging opportunities but maintains a somewhat more flexible diet than some of the most strictly obligate antbird species, allowing it some ability to forage independently when swarms are not available.