Chico's tyrannulet is a Near Threatened species of passerine bird in the family Tyrannidae, the tyrant flycatchers. It is endemic to the area of Rio Madeirinha in Brazil.
Region
South-central Amazonia (Brazil)
Typical Environment
Occurs in the interfluve around the Rio Madeirinha within the Madeira River basin. It primarily occupies terra firme evergreen forest, foraging high in the canopy and along forest edges. The species may use tall secondary growth and riparian corridors where mature trees persist. Its distribution is highly localized and patchy, reflecting the limited extent of suitable habitat. Habitat loss from logging, agriculture, and infrastructure poses significant pressures.
Altitude Range
80–300 m
Climate Zone
Tropical
Ease of Keeping
Beginner friendly: 1/5
Named in honor of Brazilian environmentalist Chico Mendes, this recently described tyrannulet is known from a very small area around the Rio Madeirinha in south-central Amazonia, Brazil. It is best identified by its high, thin, and distinctive vocalizations, as its plumage closely resembles related Zimmerius species. Ongoing deforestation in the region threatens its limited habitat. Field knowledge of its breeding biology remains sparse, making continued research important.
Temperament
inconspicuous and active
Flight Pattern
short rapid wingbeats with brief fluttering sallies
Social Behavior
Usually seen singly or in pairs, sometimes accompanying mixed-species flocks in the canopy. Likely maintains small territories, with pair bonds during the breeding period. Nesting is presumed to involve a small, well-concealed cup placed in foliage, as in congeners.
Migratory Pattern
Resident
Song Description
A thin, high-pitched series of notes, often delivered in a measured, slightly accelerating sequence. Calls are sharp, squeaky chips used frequently while foraging and are key for detection and identification.
