Hormiguero carinegro

Identificación

The black-faced antthrush is similar in general appearance to a rail, with a dumpy body, horizontal carriage, stout bill and short-cocked tail. It walks rather than hops, with a jerky motion reminiscent of a rail. It is typically 18–19 cm (7.1–7.5 in) long, and weighs 59 g (2.1 oz). The upper parts are rufous-brown, and the underparts are paler brown, except for the black face and throat, and rufous under the tail and behind the eye. The sexes are alike in plumage.

Taxonomía

The black-faced antthrush was formally described in 1837 by the French naturalists Alcide d'Orbigny and Frédéric de Lafresnaye from a specimen collected in Bolivia. They coined the binomial name Myothera analis. The specific epithet is from the Modern Latin analis meaning "relating to the undertail-coverts of the vent". The black-faced antthrush is now placed in the genus Formicarius that was introduced by the Dutch naturalist Pieter Boddaert in 1783.<p>Eleven subspecies are recognised:<p>The subspecies hoffmanni is sometimes recognised as a distinct species, the Panama antthrush, based primarily of its different song. The Mayan antthrush (Formicarius moniliger) was formerly considered conspecific with the black-faced antthrush.

Nombre científico

Formicarius analis

Autoridad

(d'Orbigny & Lafresnaye, 1837)

Orden

Passeriformes

Familia

Formicariidae

Género

Formicarius

Distribución y hábitat

It is a common and widespread forest bird in the tropical New World, from Honduras through Central America to the northern regions of South America. It occurs in Colombia, Venezuela, Trinidad and Brazil, and the Amazon Basin, except for the northwest region.

Migración

Resident species

Comportamiento

The antthrush builds a leaf-lined nest in a cavity in a hollow branch or stump where two white eggs are laid. It is an insectivore which feeds on ants and other insects. It is quite terrestrial, feeding mainly on the ground. It will follow columns of army ants. The call is a loud whistle followed by 2–10 descending whistles, WHU! wu-wu-wu-wu-wu-wu-wu-wu-wu.

Conservación

Tendencia poblacional

declining