Bolivia (B), Brazil (B), Paraguay (B), Suriname (B).
Very locally in southern Surinam (Sipaliwini), eastern and central Brazil (Amapá, and from eastern Maranhío and southern Piauí south to southern Mato Grosso, Mato Grosso do Sul, northern Sío Paulo and Minas Gerais, and east to central Bahia), extreme north-eastern Bolivia (Serranía de Huanchaca) and extreme north-eastern Paraguay (Zanja Morotí, in Concepción).
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is unknown (2010) and decreasing.
Status NT
Habitat destruction and degradation due to conversion to agriculture for livestock farming is the main threat.
For more information see BirdLife International Species Factsheet.
Food
Small fruits, insects.
Voice
A fast, musical and slurry 'tchip chip chip-tchrrrrrui'.
Rufous-sided Pygmy Tyrant (Euscarthmus rufomarginatus) [XC44711]
by Miguel Castelino from Mucug\u00ea, Chapada Diamantina, Bahia, Brazil (song)
Rufous-sided Pygmy Tyrant (Euscarthmus rufomarginatus) [XC429278]
by Tulio Dornas from Pampa de San Lorenzo, Riberalta, Beni, Bolivia (song)
Subspecies
No subspecies.
Genus once placed in the family Formicariidae because of odd tarsal scutellation. Affinities within present family uncertain.
Proposed subspecies savannophilus (Surinam) considered inseparable from other populations.
Similar Species
Female Bearded Tachuri (Polystictus pectoralis) has shorter bill and tail, and shows less contrast between throat and breast. Tawny-crowned Pygmy-tyrant (Euscarthmus meloryphus) has much plainer wings and paler underparts.
References
See References.
BirdLife International Species Factsheet