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Overview
Acre tody-tyrant

Acre tody-tyrant

Wikipedia

The Acre tody-tyrant is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Bolivia, Brazil, and Peru.

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Distribution

Region

Southwestern Amazon Basin

Typical Environment

Occurs in lowland Amazonian rainforest, closely associated with dense bamboo (especially Guadua) stands within terra firme forests and along river edges. It frequents the shaded understory and thickets where visibility is limited. The species also uses bamboo in secondary growth and forest edges, provided cover remains dense. It avoids open areas and heavily fragmented habitats. Records are from western Brazil (Acre), adjacent eastern Peru, and northern Bolivia.

Altitude Range

100–400 m

Climate Zone

Tropical

Characteristics

Size9–10 cm
Wing Span14–16 cm
Male Weight0.008 kg
Female Weight0.008 kg
Life Expectancy6 years

Ease of Keeping

Beginner friendly: 1/5

Useful to know

The Acre tody-tyrant is a tiny tyrant flycatcher specialized in dense bamboo thickets of the southwestern Amazon. It was described to science only recently and is often overlooked due to its secretive habits. Its distribution spans the tri-border region of Brazil, Peru, and Bolivia, especially where Guadua bamboo is abundant. Because it is so habitat-specific, it can be sensitive to changes in bamboo availability.

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Behaviour

Temperament

solitary and skulking

Flight Pattern

short rapid wingbeats

Social Behavior

Usually found alone or in pairs, moving quietly through dense bamboo interiors. It may join mixed-species understory flocks along bamboo edges. Nesting is presumed to be low in dense vegetation, with both parents likely involved in care. Territorial during the breeding period.

Migratory Pattern

Resident

Song Description

Voice consists of thin, high-pitched notes and brief trills given from concealed perches. Phrases are repeated at intervals and can be easily overlooked amid insect noise. Call notes are sharp and sibilant.

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