The genus lipaugus refers to the gray color of this bird and derives from the Greek term lipauges which means dark. The epithet weberi was dedicated to Walter H. Weber for his great contribution to the Antioquia Ornithological Society (SAO) and for promoting the study and conservation of birds in Colombia. The name refers to its most contrasting morphological characteristic and the name in Spanish (Arrierito Antioqueño) refers to the department of Antioquia, the only region in Colombia where this bird has been found.
It inhabits the humid and very humid tropical and subtropical forests. Moderately common in the passage between the basins of Cauca and Nechí- near Ventanas (above Valdivia). In cloud forest with dense understory. The region where he lives is currently deforested to a large extent.
In the females, the upper and middle rectrices are bronze-green. The dull black lateral rectrices are bronze iridescent. The throat center and chest are greyish with small green speckles, turning to bronze green on the sides and golden green on the abdomen.
It is found in humid forest, especially in highlands, but are also found in forest borders, Amazon lowlands, and in slightly drier forest.
The food of this species is nectar, taken from a wide variety of flowers, and some small insects. Ruby-topaz hummingbird males perch conspicuously and defend their territories aggressively. The call of this species is a high-pitched tsip.
Buff-breasted Mountain Tanager is a species of bird in the Thraupidae family and the order Passeriformes, it is measures around 19 centimeters.
Couples or small groups forage with flocks of mixed species, in the middle and high levels of forest and edge, visit the fruit feeders.
It feeds in couples or in families especially on the ground although it can rise up to the canopy. It is a big seed scattered. Forage rummaging between leaf litter or in low vegetation to catch insects and spiders. It also consumes earthworms, snails, snakes, frogs, lizards and mice. There are records of predation of smaller bird nests.
This hummingbird is relatively common in dry, wet, and very humid forests. It uses secondary mountains, forest edges and clearings, semi-open areas and coffee plantations.
Solitary, in pairs, or family groups; often with mixed flocks. Forages at all levels, from bushes at borders to canopy. Vocal year-round, sings both on exposed perch and concealed.
