The Black-faced Ibis, known scientifically as Theristicus melanopis, is a striking bird with a distinctive appearance. It measures approximately 75 centimeters in length, presenting a buffish head, neck, and lower chest. The crown and nape exhibit a warm cinnamon hue, while the upperparts and chest-band, which may be incomplete, are a muted grey. The belly and flight feathers are a stark black, and the wing-coverts are a subtle whitish color that does not contrast sharply with the grey upperparts. This bird's bill, throat-wattle, and the bare skin surrounding its eyes are blackish, and it stands on red legs.
When identifying the Black-faced Ibis, look for its buff-colored neck and the characteristic black face that gives this species its name. The grey upperparts and black belly are key features, as is the red coloration of the legs. The absence of strong contrast between the wing-coverts and the grey upperparts can help distinguish it from similar species.
This ibis favors grasslands and fields, where it can be seen foraging for food. It is well-adapted to a variety of open landscapes.
The Black-faced Ibis is predominantly found in southern and western South America. Its range extends throughout much of southern and central Argentina and Chile, from sea-level up to altitudes of around 2,500 meters. There are also very localized populations along the coastal regions of Peru.
The Black-faced Ibis is a bird that is often observed in its preferred grassland habitat. It is known for its terrestrial foraging habits.
The Buff-necked Ibis is a similar species but can be differentiated by its large white wing-patches, dark grey lower chest, and smaller throat-wattle. The Buff-necked Ibis also prefers warmer regions, unlike the more temperate zones inhabited by the Black-faced Ibis.
The IUCN has classified the Black-faced Ibis as Least Concern. While it remains fairly common in Argentina and Chile, its numbers have significantly declined in Peru, where it has been almost entirely extirpated. However, the species as a whole is not currently considered threatened.