Burnished-buff Tanager

This striking and small passerine bird from the family Thraupidae measures approximately 13 to 14 centimeters in length and weighs between 18 and 25 grams. It exhibits subtle yet distinct sexual dimorphism. The adult male boasts a stunning, shimmering coppery-gold or buffy-orange crown, paired with a contrasting blackish-blue facial mask that extends down across the throat and to the center of the chest. Its back features a pale buffy-yellow or straw-colored hue, while the wings and tail display vibrant shades of turquoise blue and green. In contrast, the female is much duller and lacks the dark throat patch, presenting a mostly olive-green and pale ochre plumage that provides excellent camouflage among the dense foliage.

Geographical distribution: It is widely distributed across South America, with a range that covers Colombia, Venezuela, the Guianas, Bolivia, Paraguay, northern Argentina, and a vast portion of Brazil, except for the dense interior of the Amazon basin. It can also be found in dry inter-Andean valleys and along the eastern slopes of the Andes.

Habitat: This bird primarily occupies semi-open areas and transitional zones, showing a strong affinity for the Cerrado biome, wooded savannas, scrubby pastures, agricultural lands, urban parks, and suburban gardens. It avoids the interior of mature, dense rainforests, instead preferring forest edges, secondary growth woodlands, and disturbed habitats.

Feeding: It is an opportunistic omnivore with a highly varied diet. A significant portion of its food intake consists of small berries and fruits, such as those from the Miconia and Ficus genera, alongside floral nectar. It actively complements this diet with insects and other small invertebrates, which it gleans from leaves, twigs, and bark, often performing acrobatic maneuvers to catch flying prey.

Behavior: It is a highly active, social, and restless species that is usually observed in pairs or small family units. It frequently participates in mixed-species foraging flocks, associating with other tanagers, warblers, and flycatchers. It produces a series of high-pitched, metallic call notes and short, pleasant songs to communicate with flock members as it moves through the canopy and mid-story vegetation.

Nesting: Its breeding biology involves the construction of a neat, deep cup-shaped nest. Built jointly by the pair, the nest is composed of dry grasses, moss, lichens, and spiderwebs, which serve to bind the structure securely to the branches of a dense shrub or tree, usually located 1 to 5 meters above the ground. The female typically lays two eggs, which are whitish or pale green, speckled with brown and gray spots. Incubation is performed mainly by the female and lasts between 12 and 14 days. Both parents share the duties of feeding and protecting the chicks until they fledge, which happens approximately two weeks after hatching.

Conservation status: It is currently classified as Least Concern (LC) on the IUCN Red List of Threatened Species. This classification is justified by its extremely large distribution range, its stable population trends, and its high adaptability to human-modified landscapes and degraded environments.