North-eastern Brazil in eastern Pernambuco and eastern Alagoas.
 
Population
Estimated population is 250 - 999 (2010) and decreasing.
Status CR
Habitat destruction and degradation through logging and conversion to sugarcane plantations and pastureland, fires spreading from adjacent plantations, is the main threat.
For more information see BirdLife International Species Factsheet.
Habits
Usually observed following mixed-species flocks, even during the breeding season. Occasionally isolated pairs.
Food
Insects including beetles and cockroaches.
Voice
A soft, uniform trill lasting 3-4 seconds. A fast, repeated call, 'tzí-de-de-de tzí-de-de-de'.
Orange-bellied Antwren (Terenura sicki) [XC235973]
by Caio Brito from Esta\u00e7\u00e3o Ecol\u00f3gica de Murici, Alagoas, Brazil (call)
Orange-bellied Antwren (Terenura sicki) [XC843833]
by Mateus Gon\u00e7alves Santos from Lagoa dos Gatos, Pernambuco, Brazil (song)
Subspecies
Forms a superspecies with Streak-capped Antwren (Terenura maculata). Further analysis of molecular, vocal and other characteristics that may differentiate them is needed.