Characterization: Species measuring about 26cm. A relatively large species, this bird is green, the sides of its head are white, and it has a red area on its nape; barred upper parts, lower parts with cordiform stains and yellow feather rachis.

Distribution: It occurs from the mouth of the Amazon river to Marajó, from the Northeast to Rio Grande do Sul, Goiás, Mato Grosso (Araguaia River, Corumbá), Paraguay, Argentina, and Uruguay.

Habitat: It inhabits the edge of forests, savanna, gallery forests; it is typical of the savanna and the scrublands, it penetrates in open areas virtually stripped of tall vegetation.

Habits: It looks for the plumes of palm trees, from where it enjoys to sing for a considerable amount of time; it lands on horizontal branches, it will sometimes eat hanging on branches, and it goes down to bushes and to the ground in search of ants.

Diet: To capture ants and termites, it produces a secretion that works like a sticky glue, giving its tongue the sticking ability of a rod with mistletoe. Additionally, it uses its tail as a support for its body in vertical substrates. It hunts ants and larvae of other insects, especially beetles.

Breeding: During the breeding season (July), males begin an intense vocalization, especially in the morning periods. On these occasions, it chooses a few traditional landing sites in high branches. The couple prepares a cavity to build its nest in, preferably in deadwood, but the birds often use palm and trumpet trees. They prefer digging on the face of the tree that bends to the ground, which protects against the rain and defends the entrance of the nest. The hatchery chamber is usually lined with small pieces of wood produced during nest construction. Two to four bright white eggs are laid.

In the UFRA area: This humming bird species was not spotted frequently and is considered rare, because it was only seen 1 times. This bird occurred most often in wetlands with riparian forests.