Anisognathus

Anisognatus notabilis © Ton van den Bersselaar

The genus Anisognathus comprises a group of medium-sized tanagers, commonly known as mountain tanagers, found in the Andes of South America. These species are often brightly colored, with combinations of blue, black, red, and yellow plumage. Mountain tanagers are specialized for life in high-altitude cloud forests and forest edges, where they feed mainly on fruit and insects. They are often seen in small, active groups.

In the wild, they are highly agile birds that frequently join mixed-species foraging flocks. This helps them find food more efficiently and provides additional protection from predators. They usually occupy the mid to upper levels of the forest, where they move quickly and skillfully through the vegetation.

In captivity, these species can tolerate temperate winters relatively well. However, they must have access to a covered, draft-free shelter during colder periods. It is recommended to provide a heat lamp so the birds can regulate their body temperature by moving closer to or farther from the heat source.

Maintaining adequate humidity is also important, as these birds naturally inhabit moist environments. Air that is too dry can negatively affect their plumage and respiratory system. Regular misting or providing bathing water is therefore advised.

Due to their active nature, they require spacious, well-planted aviaries with plenty of perches at different heights. Dense vegetation or artificial cover helps them feel secure and encourages natural behavior.

Mountain tanagers are social birds and are best kept in pairs. Caution is advised when housing them with other species, especially during the breeding season, when they may become more territorial. They can also be aggressive toward each other and toward their chicks in the nest.

This genus includes seven species: 

Anisognathus flavinucha

Anisognathus igniventris

Anisognathus lacrymosus
Anisognathus lunulatus
Anisognathus melanogenys
Anisognathus notabilis 
Anisognathus somptuosus

Breeding of Anisognathus lunulatus © Ton van den Bersselaar